D. Vollhardt

Structural relaxation due to electronic correlations in the paramagnetic insulator KCuF3 (2008)

Leonov, Ivan, Binggeli, Nadia, Korotin, Dm., Anisimov, V.I., Stojic, Natasa, Vollhardt, D.

A computational scheme for the investigation of complex materials with strongly interacting electrons is formulated which is able to treat atomic displacements, and hence structural relaxation,...

Structural relaxation due to electronic correlations in the paramagnetic insulator KCuF3 (2008)

Leonov, I., Binggeli, N., Korotin, Dm., Anisimov, V. I., Stojic, N., Vollhardt, D.

A computational scheme for the investigation of complex materials with strongly interacting electrons is formulated which is able to treat atomic displacements, and hence structural relaxation,...

Metal-Insulator Transitions and Realistic Modelling of Correlated Electron Systems (2008)

N. Blümer, K. Held, G. Keller, D. Vollhardt, N. Blümer, ...

Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and...

Equation of state for the phase coexistence region of insoluble monolayers under consideration of the entropy nonideality (2008)

Chiral discrimination and recognition in Langmuir monolayers (2008)

Interfacial molecular recognition and chirality in amphiphilic assemblies (2008)

Interfacial molecular recognition of non-surface-active species at Langmuir monolayers (2008)

Oscillation of interfacial tension produced by transfer of nonionic surfactant through the liquid/liquid interface (2008)

Thermodynamic characterization of mixed monolayers of two similar amide amphiphiles different only by exchange of substituents position (2008)

Simplified method of the quantum chemical analysis for determination of thermodynamic parameters of 2D cluster formation of amphiphilic compounds at the air/water interface (2008)

Vysotsky, Y. B., Belyaeva, E. A., Vollhardt, D., Aksenenko, E. V., Miller, R.

Influence of ion transfer kinetics on the composition of Langmuir-Blodgett films (2008)

Kovalchuk, V. I., Bondarenko, M. P., Zholkovskiy, E. K., Vollhardt, D.

Model studies of the interfacial ordering of oleanolic acid in the cuticula (2008)

Brezesinski, G., Vollhardt, D.

Structural features of mixed monolayers of oleanolic acid and stearic acid (2008)

Brezesinski, G., Vollhardt, D., Iimura, K., Cölfen, H.

Chirality and dipolar interactions of membrane mimetic amphiphilic molecules (2008)

Nandi, N., Thirumoorthy, K., Vollhardt, D.

Chiral discrimination in stearoyl amine glycerol monolayers (2008)

Nandi, N., Thirumoorthy, K., Vollhardt, D.

Model studies of the interfacial ordering of oleanolic acid in the cuticula (2008)

G. Brezesinski, D. Vollhardt

Journal article

Structural features of mixed monolayers of oleanolic acid and stearic Acid (2008)

G. Brezesinski, D. Vollhardt, K. Iimura, H. Coelfen

Journal article

Metal-Insulator Transitions and Realistic Modelling of Correlated Electron Systems (2007)

N. Bifmer, N. Bliimer, K. Held, K. Held, G. Keller, G. Keller, ...

published in

Kunes, J., Anisimov, V. I., Skornyakov, S. L., Lukoyanov, A. V., Vollhardt, D.

The bandstructure of the prototypical charge-transfer insulator NiO is computed by using a combination of an {\it ab initio} bandstructure method and the dynamical mean-field theory with a quantum...

Instability and spontaneous oscillations by surfactant transfer through a liquid membrane (2007)

Recognition and dissociation kinetics in the interfacial molecular recognition of barbituric acid by amphiphilic melamine-type monolayers (2007)

Kovalchuk, N. M., Vollhardt, D., Fainerman, V. B., Aksenenko, E. V.

Role of dipolar interaction in the mesoscopic domains of phospholipid monolayers: Dipalmitoylphosphatidylcholine and dipalmitoylphosphatidylethanolamine (2007)

Thirumoorthy, K., Nandi, N., Vollhardt, D.

Effect of unsaturation in fatty acids on the main characteristics of Langmuir monolayers (2007)

Molecular interactions in amphiphilic assemblies: Theoretical perspective (2007)

Quantum chemical analysis of thermodynamics of 2D cluster formation of n-thioalcohols at the air/water interface (2007)

Vysotsky, Y. B., Belyaeva, E. A., Fainerman, V. B., Vollhardt, D., Miller, R.

Concentration polarization at Langmuir monolayer deposition: The role of indifferent electrolytes (2007)

Bondarenko, M. P., Kovalchuk, V. I., Zholkovskiy, E. K., Vollhardt, D.

Quantum chemical analysis of the thermodynamics of 2-dimensional cluster formation of alkylamines at the air/water interface (2007)

Vysotsky, Y. B., Belyaeva, E. A., Fainerman, V. B., Aksenenko, E. V., Vollhardt, D., Miller, R.

Local correlations and hole doping in NiO: a dynamical mean field study (2006)

Kunes, J., Anisimov, V. I., Lukoyanov, A. V., Vollhardt, D.

Using a combination of {\it ab initio} bandstructure methods and dynamical mean-field theory we study the single-particle spectrum of the prototypical charge-transfer insulator NiO. Good agreement...

Phase separation in the particle-hole asymmetric Hubbard model (2006)

Eckstein, M., Kollar, M., Potthoff, M., Vollhardt, D.

The paramagnetic phase diagram of the Hubbard model with nearest-neighbor (NN) and next-nearest-neighbor (NNN) hopping on the Bethe lattice is computed at half-filling and in the weakly doped regime...

Kinks in the dispersion of strongly correlated electrons (2006)

Byczuk, K., Kollar, M., Held, K., Nekrasov, I. A., Pruschke, Th., ...

The properties of condensed matter are determined by single-particle and collective excitations and their interactions. These quantum-mechanical excitations are characterized by an energy E and a...

Isosbestic points in the spectral function of correlated electrons (2006)

Eckstein, M., Kollar, M., Vollhardt, D.

We investigate the properties of the spectral function A(omega,U) of correlated electrons within the Hubbard model and dynamical mean-field theory. Curves of A(omega,U) vs. omega for different values...

LDA+DMFT computation of the electronic spectrum of NiO (2006)

Ren, X., Leonov, I., Keller, G., Kollar, M., Nekrasov, I., Vollhardt, D.

The electronic spectrum, energy gap and local magnetic moment of paramagnetic NiO are computed by using the local density approximation plus dynamical mean-field theory (LDA+DMFT). To this end the...

Evidence for strong electronic correlations in the spectra of Sr$_2$RuO$_4$ (2006)

Pchelkina, Z. V., Nekrasov, I. A., Pruschke, Th., Sekiyama, A., Suga, S., Anisimov, V. I., ...

The importance of electronic correlation effects in the layered perovskite Sr$_2$RuO$_4$ is evidenced. To this end we use state-of-the-art LDA+DMFT (Local Density Approximation + Dynamical Mean-Field...

Momentum-resolved spectral functions of SrVO3 calculated by LDA+DMFT (2006)

Nekrasov, I. A., Held, K., Keller, G., Kondakov, D. E., Pruschke, T., Kollar, M., ...

LDA+DMFT, the merger of density functional theory in the local density approximation and dynamical mean-field theory, has been mostly employed to calculate k-integrated spectra accessible by...

Spontaneous nonlinear oscillation produced by alcohol transfer through water/alkane interface: An experimental study (2006)

Nucleation in monolayers (2006)

Effect of the exchange of substituent position in an amide amphiphile on the monolayer characteristics (2006)

Vollhardt, D., Wagner, R.

Prediction of the handedness of the domains of monolayers of D-N-palmitoyl aspartic acid: Integrated molecular orbital and molecular mechanics based calculation (2006)

Thirumoorthy, K., Nandi, N., Vollhardt, D.

Marangoni instability and spontaneous non-linear oscillations produced at liquid interfaces by surfactant transfer (2006)

Semiempirical quantum mechanical calculations of dipolar interaction between dipyridamole and dipalmitoyl phosphatidyl choline in Langmuir monolayers (2006)

Thirumoorthy, K., Nandi, N., Vollhardt, D., Oliveira, O. N.

Surface pressure isotherm for the fluid state of Langmuir monolayers (2006)

Surfactant transfer through a liquid membrane: Origin of spontaneous oscillations at the membrane/acceptor phase interface (2006)

Quantum chemical analysis of the thermodynamics of 2D cluster formation of n-carboxylic acids at the air/water interface (2006)

Vysotsky, Y. B., Muratov, D. V., Boldyreva, F. L., Fainerman, V. B., Vollhardt, D., Miller, R.

Reply to "comments on the thermodynamic justification of an equation of state for monolayers" by Anatoly I. Rusanov (2006)

Distributions of ionic concentrations and electric field around the three-phase contact at high rates of Langmuir-Blodgett deposition (2006)

Bondarenko, M. P., Zholkovskiy, E. K., Kovalchuk, V. I., Vollhardt, D.

Force measuring methods for determination of surface tension of liquids: A comparison (2006)

Richter, L., Vollhardt, D.

Realistic investigations of correlated electron systems with LDA plus DMFT (2006)

Held, K., Nekrasov, I. A., Keller, G., Eyert, V., Blumer, N., McMahan, A. K., ...

Conventional band structure calculations in the local density approximation (LDA) [1-3] are highly successful for many materials, but miss important aspects of the physics and energetics of strongly...

Momentum-resolved spectral functions of SrVO$_3$ calculated by LDA+DMFT (2005)

Nekrasov, I. A., Held, K., Keller, G., Kondakov, D. E., Pruschke, Th., Kollar, M., ...

LDA+DMFT, the merger of density functional theory in the local density approximation and dynamical mean-field theory, has been mostly employed to calculate k-integrated spectra accessible by...

Green functions for nearest- and next-nearest-neighbor hopping on the Bethe lattice (2005)

Kollar, M., Eckstein, M., Byczuk, K., Blümer, N., Van Dongen, P., ...

We calculate the local Green function for a quantum-mechanical particle with hopping between nearest and next-nearest neighbors on the Bethe lattice, where the on-site energies may alternate on...

Comparative study of correlation effects in CaVO3 and SrVO3 (2005)

Nekrasov, I. A., Keller, G., Kondakov, D. E., Kozhevnikov, A. V., Pruschke, Th., Held, K., ...

We present parameter-free LDA+DMFT (local density approximation + dynamical mean field theory) results for the many-body spectra of cubic SrVO3 and orthorhombic CaVO3. Both systems are found to be...

Dynamical mean-field theory and its applications to real materials (2005)

Vollhardt, D., Held, K., Keller, G., Bulla, R., Pruschke, T., Nekrasov, I. A., ...

Two aspects of the Mott-Hubbard transition in Cr-doped V2O3 (2005)

Held, K., Allen, J. W., Anisimov, V. I., Eyert, V., Keller, G., Kim, H. D., ...

Green functions for nearest- and next-nearest-neighbor hopping on the Bethe lattice (2005)

Kollar, M., Eckstein, M., Byczuk, K., Blümer, N., Van Dongen, P., ...

Comparative study of correlation effects in CaVO3 and SrVO3 (2005)

Nekrasov, I. A., Keller, G., Kondakov, D. E., Kozhevnikov, A. V., Pruschke, T., Held, K., ...

Auto-oscillation of surface tension: heptanol in water and water/ethanol systems (2005)

Grigorieva, O. V., Grigoriev, D. O., Kovalchuk, N. M., Vollhardt, D.

Effect of buoyancy on appearance and characteristics of surface tension repeated auto-oscillations (2005)

Kovalchuk, N. A., Vollhardt, D.

Effect of interfacial molecular recognition of non-surface-active species on the main characteristics of monolayers (2005)

Effect of the hydroxy group position on the monolayer characteristics of hydroxypalmitic acids (2005)

Siegel, S., Vollhardt, D., Cadenhead, D. A.

Interfacial molecular recognition of dissolved thymine by medium chain dialkyl melamine-type monolayers (2005)

Vollhardt, D., Liu, F., Rudert, R., He, W.

Ion redistribution and meniscus stability at Langmuir monolayer deposition (2005)

Kovalchuk, V. I., Vollhardt, D.

Molecular recognition kinetics of nonsurface active pyrimidine derivatives dissolved in the aqueous subphase by an amphiphilic melamine type monolayer: A theoretical approach (2005)

Fainerman, V. B., Vollhardt, D., Aksenenko, E. V., Liu, F.

Molecular recognition of dissolved pyrimidine derivatives by a dialkyl melamine-type monolayer (2005)

Vollhardt, D., Liu, F., Rudert, R.

Nonlinear spontaneous oscillations at the liquid/liquid interface produced by surfactant dissolution in the bulk phase (2005)

Phase behavior of 2,3-disubstituted methyl octadecanoate monolayers at the air-water interface (2005)

Chen, X. D., Wiehle, S., Chi, L. F., Muck-Lichtenfeld, C., Rudert, R., Vollhardt, D., ...

Quantum chemical semiempirical approach to the structural and thermodynamic characteristics of fluoroalkanols at the air/water interface (2005)

Vysotsky, Y. B., Bryantsev, V. S., Boldyreva, F. L., Fainerman, V. B., Vollhardt, D.

Role of electrostatic interactions for the domain shapes of Langmuir monolayers of monoglycerol amphiphiles (2005)

Thirumoorthy, K., Nandi, N., Vollhardt, D.

The role of nonsurface-active species at interfacial molecular recognition by melamine-type monolayers (2005)

Vollhardt, D., Liu, F., Rudert, R.

Thermodynamic and structural characterization of amphiphilic melamine-type monolayers (2005)

Vollhardt, D., Fainerman, V. B., Liu, F.

Ann. Phys. (Leipzig) 14, No. 9 -- 10, 642 -- 657 (2005) / DOI 10.1002/andp.200510152 Green functions for nearest- and next-nearest-neighbor hopping on the Bethe lattice (2005)

Kollar Eckstein Byczuk, M. Kollar, M. Eckstein, K. Byczuk, N. Blümer, P. Van Dongen, ...

this article we study the spectra of tight-binding Hamiltonians with hopping between nearest (NN) and next-nearest neighbors (NNN) on the Bethe lattice. In this context the standard methods of...

Dynamical Mean-Field Theory and Its Applications to Real Materials (2004)

Vollhardt, D., Held, K., Keller, G., Bulla, R., Pruschke, Th., Nekrasov, I. A., ...

Dynamical mean-field theory (DMFT) is a non-perturbative technique for the investigation of correlated electron systems. Its combination with the local density approximation (LDA) has recently led to...

Two Aspects of the Mott-Hubbard Transition in Cr-doped V_2O_3 (2004)

Held, K., Allen, J. W., Anisimov, V. I., Eyert, V., Keller, G., ...

The combination of bandstructure theory in the local density approximation with dynamical mean field theory was recently successfully applied to V$_2$O$_3$ -- a material which undergoes the f amous...

Full orbital calculation scheme for materials with strongly correlated electrons (2004)

Anisimov, V. I., Kondakov, D. E., Kozhevnikov, A. V., Nekrasov, I. A., Pchelkina, Z. V., Allen, J. W., ...

We propose a computational scheme for the ab initio calculation of Wannier functions (WFs) for correlated electronic materials. The full-orbital Hamiltonian H is projected into the WF subspace...

Electronic Structure of Paramagnetic V_2O_3: Strongly Correlated Metallic and Mott Insulating Phase (2004)

Keller, G., Held, K., Eyert, V., Vollhardt, D., Anisimov, V. I.

LDA+DMFT, the computation scheme merging the local density approximation and the dynamical mean-field theory, is employed to calculate spectra both below and above the Fermi energy and spin and...

Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3 (2004)

Sekiyama, A., Fujiwara, H., Imada, S., Suga, S., Eisaki, H., Uchida, S. I., ...

Aggregation and re-organization of normal fatty alcohols at the air/water interface PM3 molecular orbital approximation (2004)

Vysotsky, Y. B., Bryantsev, V. S., Vollhardt, D., Miller, R., Fainerman, V. B.

Anomalous temperature dependence of domain shape in langmuir monolayers: Role of dipolar interaction (2004)

Characteristic features of hydroxystearic acid monolayers at the air/water interface (2004)

Vollhardt, D., Siegel, S., Cadenhead, D. A.

Chiral discrimination effects in langmuir monolayers of 1-0-hexadecyl glycerol (2004)

Nandi, N., Vollhardt, D., Brezesinski, G.

Concentration polarization at the Langmuir monolayer deposition: Theoretical considerations (2004)

Kovalchuk, V. I., Zholkovskiy, E. K., Bondarenko, M. P., Vollhardt, D.

Dynamics and equilibrium of the penetration of soluble cetyltrimethylammonium bromide into Langmuir monolayers of arachidic acid under different pH conditions (2004)

Fainerman, V. B., Vollhardt, D., Roth, A., Fricke, M., Volkmer, D.

Effect of hydroxyl group position and system parameters on the features of hydroxystearic acid monolayers (2004)

Vollhardt, D., Siegel, S., Cadenhead, D. A.

Effect of substance properties on the appearance and characteristics of repeated surface tension auto-oscillation driven by Marangoni force (2004)

Effect of the hydroxyl group position on the phase behavior of hydroxyoctadecanoic acid monolayers at the air/water interface (2004)

Ion redistribution near the polar groups in the Langmuir wetting process (2004)

Kovalchuk, V. I., Zholkovskiy, E. K., Bondarenko, M. P., Vollhardt, D.

Molecular pair potential of chiral amino acid amphiphile in Langmuir monolayers on the basis of an atomistic model (2004)

Nandi, N., Vollhardt, D., Rudert, R.

Special issue - In honour of the 250th volume of Colloids and Surfaces A and the 25th Anniversary of the International Association of Colloid and Interface Scientists (IACIS) - Foreword (2004)

Spontaneous non-linear surface tension oscillations in the presence of a spread surfactant monolayer at the air/water interface (2004)

Grigorieva, O. V., Kovalchuk, N. M., Grigorlev, D. O., Vollhardt, D.

Transition state for aggregation and reorganization of normal fatty alcohols at the air/water interface (2004)

Vysotsky, Y. B., Bryantsev, V. S., Fainerman, V. B., Vollhardt, D., Miller, R., Aksenenko, E. V.

Electronic structure of paramagnetic V2O3: Strongly correlated metallic and Mott insulating phase (2004)

Keller, G., Held, K., Eyert, V., Vollhardt, D., Anisimov, V. I.

Nonlinear oscillations at liquid interfaces by surfactant transfer (2004)

Direct numerical simulation of the mechanism of surface tension auto-oscillation (2004)

Phase behavior and domain structure of 9-hydroxyhexadecanoic acid monolayers (2004)

Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3 (2003)

Sekiyama, A., Fujiwara, H., Imada, S., Suga, S., Eisaki, H., Uchida, S. I., ...

We report high-resolution high-energy photoemission spectra together with parameter-free LDA+DMFT (local density approximation + dynamical mean-field theory) results for Sr1-xCaxVO3, a prototype 3d1...

Orbital state and magnetic properties of LiV2O4 (2003)

Nekrasov, I. A., Pchelkina, Z. V., Keller, G., Pruschke, T., Held, K., Krimmel, A., ...

Prominent Quasiparticle Peak in the Photoemission Spectrum of the Metallic Phase of V2O3 (2003)

Mo, S. K., Denlinger, J. D., Kim, H. D., Park, J. H., Allen, J. W., Sekiyama, A., ...

Phase transition and domain morphology in Langmuir monolayers of a calix[4]arene derivative containing no alkyl chain (2003)

He, W. J., Vollhardt, D., Rudert, R., Zhu, L. G., Li, J. B.

Experimental studies on the geometrical characteristics determining the system behavior of surface tension autooscillations (2003)

Grigorieva, O. V., Kovalchuk, N. M., Grigoriev, D. O., Vollhardt, D.

Characteristic features of amphiphilic p-functionalized calixarene monolayers at the air/water interface (2003)

Vollhardt, D., Gloede, J., Weidemann, G., Rudert, R.

Chiral discrimination effects in Langmuir monolayers: Monolayers of palmitoyl aspartic acid, N-stearoyl serine methyl ester, and N-tetradecyl-gamma,delta-dihydroxypentanoic acid amide (2003)

Equation of state for monolayers under consideration of the two-dimensional compressibility in the condensed state (2003)

Correlation between the microscopic and mesoscopic chirality in Langmuir monolayers (2003)

Effect of molecular chirality on the morphology of biomimetic Langmuir monolayers (2003)

Influence of the system geometry on the characteristics of the surface tension auto-oscillations: A numerical study (2003)

LDA+DMFT investigations of transition metal oxides and f-electron materials (2003)

Held, K., Anisimov, V. I., Eyert, V., Keller, G., McMahan, A. K., Nekrasov, I. A., ...

Realistic investigations of correlated electron systems with LDA+DMFT (2003)

Held, K., Nekrasov, I. A., Keller, G., Eyert, V., Blümer, N., McMahan, A. K., ...

Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 (2002)

Denlinger, J. D., Allen, J. W., Sekiyama, A., ...

We present the first observation of a prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 and report new spectral calculations that combine the local density...

Explanation of the similarity of the experimental photoemission spectra of SrVO3 and CaVO3 (2002)

Nekrasov, I. A., Keller, G., Kondakov, D. E., Kozhevnikov, A. V., Pruschke, Th., Held, K., ...

We present parameter-free LDA+DMFT results for the many-particle density of states of cubic SrVO3 and orthorhombic CaVO3. Both systems are found to be strongly correlated metals, but em not on the...

Orbital state and magnetic properties of LiV_2 O_4 (2002)

Nekrasov, I. A., Pchelkina, Z. V., Keller, G., Pruschke, Th., Held, K., Krimmel, A., ...

LiV_2 O_4 is one of the most puzzling compounds among transition metal oxides because of its heavy fermion like behavior at low temperatures. In this paper we present results for the orbital state...

Phase transition in monolayers of straight chain and 2-methyl branched alcohols at the air-water interface (2002)

Vollhardt, D., Emrich, G., Siegel, S., Rudert, R.

Temperature dependence of the phase transition in branched chain phospholipid monolayers at the air/water interface (2002)

Supramolecular organisation in monolayers at the air/water interface (2002)

Morphology of monolayers at air/water interfaces (2002)

Crystallization of (012) oriented calcite single crystals underneath monolayers of tetra(carboxymethoxy)calix 4 arenes (2002)

Volkmer, D., Fricke, M., Vollhardt, D., Siegel, S.

Kinetics of two-dimensional phase transition of langmuir monolayers (2002)

Chiral discrimination in 1-stearylamine-glycerol monolayers (2002)

Vollhardt, D., Gehlert, U.

Miscibility of alkanol and fluoroalkanol in Langmuir film at the air/water interface (2002)

Takiue, T., Vollhardt, D.

Auto-oscillations of surface tension: experiments with octanol and hexanol and numerical simulation of the system dynamics (2002)

Kovalchuk, N. M., Kovalchuk, V. I., Vollhardt, D.

Theoretical description of repeated surface-tension auto- oscillations (2002)

Comparison of surface tension auto-oscillations in fatty acid-water and aliphatic alcohol-water systems (2002)

The role of buoyancy in the development of surface tension auto-oscillations (2002)

Equilibrium and dynamics of 2D aggregating mixed monolayers consisting of soluble and insoluble amphiphiles (2002)

Dynamics of a mixed monolayer consisting of a soluble amphiphile and its insoluble 2D condensing homologue (2002)

Fainerman, V. B., Vollhardt, D., Siegel, S.

Prediction of the handedness of the chiral domains of amphiphilic monolayers: monolayers of amino acid amphiphiles (2002)

Molecular origin of the chiral interaction in biomimetic systems: Dipalinitoylphosphatidyleholine Langmuir monolayer (2002)

Chiral interaction in enantiomeric and racemic dipalmitoyl phosphatidylcholine Langmuir monolayers (2002)

Nandi, N., Roy, R. K., Upadhaya, A. S., Vollhardt, D.

Temperature-dependent domain growth in 9-hydroxypalmitic acid monolayers (2002)

Quantum chemical analysis of thermodynamics of the two-dimensional cluster formation at the air/water interface (2002)

Vysotsky, Y. B., Bryantsev, V. S., Fainerman, V. B., Vollhardt, D., Miller, R.

Quantum chemical semi-empirical approach to the thermodynamic characteristics of oligomers and large aggregates of alcohols at the water/air interface (2002)

Vysotsky, Y. B., Bryantsev, V. S., Fainerman, V. B., Vollhardt, D., Miller, R.

Quantum chemical analysis of the thermodynamics of 2D cluster formation of odd n-alcohols at the air/water interface (2002)

Vysotsky, Y. B., Bryantsev, V. S., Fainerman, V. B., Vollhardt, D.

Thermodynamics of two-dimensional cluster formation at the water/air interface (2002)

Vysotsky, Y. B., Bryantsev, V. S., Fainerman, V. B., Vollhardt, D., Miller, R.

Molecular packing and textures of 1-stearylamine-rac-glycerol monolayers (2002)

Gehlert, U., Vollhardt, D.

The LDA+DMFT Approach to Materials with Strong Electronic Correlations (2001)

Held, K., Nekrasov, I. A., Keller, G., Eyert, V., Blümer, N., McMahan, A. K., ...

LDA+DMFT is a novel computational technique for ab initio investigations of real materials with strongly correlated electrons, such as transition metals and their oxides. It combines the strength of...

On the Analyticity of Solutions in the Dynamical Mean-Field Theory (2001)

Pruschke, Th., Metzner, W., Vollhardt, D.

The unphysical solutions of the periodic Anderson model obtained by H. Keiter and T. Leuders [Europhys. Lett. 49, 801(2000)] in dynamical mean-field theory (DMFT) are shown to result from the...

On the analyticity of solutions in the dynamical mean-field theory (2001)

Pruschke, T., Metzner, W., Vollhardt, D.

Theory of protein penetration into 2 D aggregating lipid monolayers. (2001)

Dickinson, E., Miller, R., Fainerman, V. B., Miller, R., Vollhardt, D.

Dynamics and phase transition in adsorbed monolayers of sodium dodecyl sulfate/dodecanol mixtures. (2001)

Fainerman, V. B., Vollhardt, D., Emrich, G.

Study of the pH dependence of head group bonding in arachidic acid monolayers by polarization modulation infrared reflection absorption spectroscopy. (2001)

Johann, R., Vollhardt, D., Möhwald, H.

Shifting of fatty acid monolayer phases due to ionization of the headgroups. (2001)

Johann, R., Vollhardt, D., Möhwald, H.

The effect of headgroup interactions on structure and morphology of arachidic acid monolayers. (2001)

Johann, R., Brezesinski, G., Vollhardt, D., Möhwald, H.

A numerical study of surface tension auto-oscillations. Effect of surfactant properties. (2001)

Numerical study of the Marangoni instability resulting in surface tension auto-oscillations: General regularities of the system evolution. (2001)

Kovalchuk, N. M., Kovalchuk, V. I., Vollhardt, D.

Dissociation of fatty acid and counterion binding at the langmuir monolayer deposition: Theoretical considerations. (2001)

Kovalchuk, V. I., Zholkovskiy, E. K., Bondarenko, N. P., Vollhardt, D.

Effect of sugars and dimethyl sulfoxide on the structure and phase behavior of DPPC monolayers. (2001)

Krasteva, N., Vollhardt, D., Brezesinski, G., Möhwald, H.

Effect of fructose, sucrose, and dimethyl sulfoxide on the equilibrium thickness of DMPC foam films. (2001)

Krasteva, N., Krustev, R., Müller, H. J., Vollhardt, D., Möhwald, H.

Microscopic study of chiral interactions in Langmuir monolayer: monolayers of N-palmitoyl aspartic acid and N-stearoyl serine methyl ester. (2001)

Equilibrium and dynamics of dissolved homologue penetration into an N-tetradecyl-g-hydroxybutyric acid amide monolayer forming crystalline condensed phases. (2001)

Molecular recognition under formation of amphiphilic amidinium carboxylates at the air-water interface. (2001)

Siegel, S., Kindermann, M., Vollhardt, D.

Phase transition in monolayers induced by adsorbed amphiphiles. (2001)

Phase transition in Langmuir monolayers. (2001)

Vollhardt, D., Fainerman, V.

Phase transition in adsorbed monolayers of sodium dodecyl sulfate/dodecanol mixtures. (2001)

Vollhardt, D., Brezesinski, G., Siegel, S., Emrich, G.

Mott-Hubbard Metal-Insulator Transition in Paramagnetic V2O3: An LDA + DMFT(QMC) Study (2001)

Anisimov, V. I., Eyert, V., Held, K., Keller, G., Vollhardt, D.

Finite temperature numerical renormalization group study of the Mott-transition (2000)

Bulla, R., Costi, T. A., Vollhardt, D.

Wilson's numerical renormalization group (NRG) method for the calculation of dynamic properties of impurity models is generalized to investigate the effective impurity model of the dynamical mean...

Metallic Ferromagnetism - an Electronic Correlation Phenomenon (2000)

Vollhardt, D., Blümer, N., Held, K., Kollar, M.

New insights into the microscopic origin of itinerant ferromagnetism were recently gained from investigations of electronic lattice models within dynamical mean-field theory (DMFT). In particular, it...

Superfluid Helium 3: Link between Condensed Matter Physics and Particle Physics (2000)

Vollhardt, D., Woelfle, P.

The discovery of the superfluid phases of Helium 3 in 1971 opened the door to one of the most fascinating systems known in condensed matter physics. Superfluidity of Helium 3, originating from pair...

Mott-Hubbard Metal-Insulator Transition in Paramagnetic V_2O_3: a LDA+DMFT(QMC) Study (2000)

Held, K., Keller, G., Eyert, V., Vollhardt, D., Anisimov, V. I.

The electronic properties of paramagnetic V_2O_3 are investigated by the ab-initio computational scheme LDA+DMFT(QMC). This approach merges the local density approximation (LDA) with dynamical...

Realistic modeling of strongly correlated electron systems: An introduction to the LDA+DMFT approach (2000)

Held, K., Nekrasov, I. A., Blümer, N., Anisimov, V. I., Vollhardt, D.

The LDA+DMFT approach merges conventional band structure theory in the local density approximation (LDA) with a state-of-the-art many-body technique, the dynamical mean-field theory (DMFT). This new...

Conductivity of disordered electrons: Mean-field approximation containing vertex corrections (2000)

Janis, V., Vollhardt, D.

The electrical {\em dc}-conductivity of disordered, non-interacting electrons is calculated in the asymptotic limit of high lattice dimensions $d\to \infty$. To go beyond the lowest-order...

Kollar, M., Vollhardt, D.

We study the Hubbard model with bond-charge interaction (`correlated hopping') in terms of the Gutzwiller wave function. We show how to express the Gutzwiller expectation value of the bond-charge...

Calculation of photoemission spectra of the doped Mott insulator La_{1-x}Sr_xTiO_3 using LDA+DMFT(QMC) (2000)

Nekrasov, I. A., Held, K., Blümer, N., Poteryaev, A. I., Anisimov, V. I., Vollhardt, D.

The spectral properties of La$_{1-x}$Sr$_{x}$TiO$_{3}$, a doped Mott insulator with strong Coulomb correlations, are calculated with the ab initio computational scheme LDA+DMFT(QMC). It starts from...

Arachidic acid monolayers at high pH of the aqueous subphase: Studies of counterion bonding. (2000)

Fainerman, V. B., Vollhardt, D., Johann, R.

Influence of cholesterol on domain shape and lattice structure in arachidic acid monolayers at high pH. (2000)

Johann, R., Symietz, C., Vollhardt, D., Brezesinski, G., Möhwald, H.

Faceting of monolayer domains. (2000)

Johann, R., Vollhardt, D., Möhwald, H.

Direct numerical simulation of dynamic behaviour of a system with a surfactant droplet under the free water surface: theoretical consideration of the auto-oscillation of surface tension. (2000)

Kovalchuk, N. M., Kovalchuk, V. I., Vollhardt, D.

Autooscillations of surface tension in water-alcohol systems. (2000)

Morphology and phase behaviour of monoglyceride monolayers on aqueous sugar substrates. (2000)

Krasteva, N., Vollhardt, D.

Mixed stearoyl-rac-glycerol/12-(hydroxy)stearoyl-rac-glycerol monolayers on the air/water interface: Brewster angle microscopy and grazing incidence X-ray diffraction investigation. (2000)

Krasteva, N., Vollhardt, D., Brezesinski, G.

N-n-Alkyl N,N-dimethylammonioacetic acid bromides: the first complete series of crystal and molecular structure determinations of an amphiphilic compound with alkyl chain lengths n = 1,. . ., 16. (2000)

Rudert, R., Schulz, B., Reck, G., Vollhardt, D., Kriwanek, J.

Molecular recognition of a dissolved carboxylate by aluminium monolayers at the air-water interface. (2000)

Siegel, S., Kindermann, M., Regenbrecht, M., Vollhardt, D., Kiedrowski, G. Von

Grazing incidence diffraction and Brewster-angle microscope studies of mixtures of hexadecanoic acid and methyl hexadecanoate: The unexpected appearance of a phase with nearest-neighbor tilt. (2000)

Teer, E., Knobler, C. M., Siegel, S., Vollhardt, D., Brezesinski, G.

Coadsorption of sodium dodecyl sulfate and medium-chain alcohols at the air-water interface. (2000)

Vollhardt, D., Emrich, G.

Penetration of dissolved amphiphiles into two-dimensional aggregating lipid monolayers. (2000)

Dynamic and equilibrium surface pressure of adsorbed dodecanol monolayers at the air/water interface. (2000)

Vollhardt, D., Fainerman, V. B., Emrich, G.

Thermodynamic and textural characterization of DPPG phospholipid monolayers. (2000)

Vollhardt, D., Fainerman, V. B., Siegel, S.

Effect of protein penetration into phospholipid monolayers: morphology and structure. (2000)

Zhao, J., Vollhardt, D., Brezesinski, G., Siegel, S., Wu, J., Li, J. B., ...

Effect of dodecyl dimethyl phosphine oxide penetration into phospholipid monolayers: morphology and dynamics. (2000)

Zhao, J., Vollhardt, D., Wu, J., Miller, R., Siegel, S., Li, J. B.

Anderson impurity in a correlated conduction band (1999)

Hofstetter, W., Bulla, R., Vollhardt, D.

We investigate the physics of a magnetic impurity with spin 1/2 in a correlated metallic host. Describing the band by a Hubbard Hamiltonian, the problem is analyzed using dynamical mean-field-theory...

Electronic Correlations in Manganites (1999)

Held, K., Vollhardt, D.

The influence of local electronic correlations on the properties of colossal magnetoresistance manganites is investigated. To this end, a ferromagnetic two-band Kondo lattice model is supplemented...

Thermodynamically consistent equilibrium properties of normal-liquid Helium-3 (1999)

Kollar, M., Vollhardt, D.

The high-precision data for the specific heat C_{V}(T,V) of normal-liquid Helium-3 obtained by Greywall, taken together with the molar volume V(T_0,P) at one temperature T_0, are shown to contain the...

Absence of hysteresis at the Mott-Hubbard metal-insulator transition in infinite dimensions (1999)

Schlipf, J., Jarrell, M., Blümer, N., Kehrein, S., Pruschke, Th., ...

The nature of the Mott-Hubbard metal-insulator transition in the infinite-dimensional Hubbard model is investigated by Quantum Monte Carlo simulations down to temperature T=W/140 (W=bandwidth)....

Equilibrium and dynamics of soluble surfactant penetration into a Langmuir monolayer of a 2D aggregating homologue. (1999)

Fainerman, V. B., Makievski, A. V., Vollhardt, D., Siegel, S., Miller, R.

Penetration of Langmuir monolayers by soluble amphiphilic molecules. (1999)

Equations of state for Langmuir monolayers with two-dimensional phase transitions. (1999)

Dynamics of beta-lactoglobulin penetration into Langmuir monolayers of 2D condensating phospholipid. (1999)

Fainerman, V. B., Zhao, J., Vollhardt, D., Makievski, A. V., Li, J. B.

Investigations of pH-dependent domain structure of lead arachidate Langmuir-Blodgett films by means of X-ray specular and diffuse scattering and atomic force microscopy. (1999)

Geue, T., Schultz, M., Englisch, U., Stommer, R., Pietsch, U., Meine, K., ...

Texture features of long-chain fatty acid monolayers at high pH of the aqueous subphase. (1999)

Johann, R., Vollhardt, D.

Auto-oscillation of surface tension. (1999)

Kovalchuk, V. I., Kamusewitz, H., Vollhardt, D., Kovalchuk, N. M.

Regular stripe patterns in skeletonized Langmuir-Blodgett films of arachidic acid. (1999)

Mahnke, J., Vollhardt, D., Stockelhuber, K. W., Meine, K., Schulze, H. J.

Crystal structure of 11,23-bis(diisopropylphosphono)-25,26,27,28-tetramethoxycalix[4]arene, C44H58O10P2. (1999)

Reck, G., Schneider, M., Gloede, J., Vollhardt, D.

Long range orientational order of branched chain phospholipid monolayers. (1999)

Ordering in Langmuir monolayers of branched chain phospholipids. (1999)

Siegel, S., Vollhardt, D., Brezesinski, G., Bringezu, F., Möhwald, H.

Phase transition in adsorption layers at the air-water interface. (1999)

Three-dimensional instantaneous nucleation in 2-docosylamino-5-nitropyridine monolayers at the air-water interface. (1999)

Disorder in Langmuir monolayers: 2. Relation between disordered alkyl chain packing and the loss of long-range tilt orientational order. (1999)

Weidemann, G., Brezesinski, G., Vollhardt, D., DeWolf, C., Möhwald, H.

The influence of spreading solvent traces in the atmosphere on surface tension measurements by using a micro-film balance and the captive bubble method. (1999)

Wüstneck, R., Wüstneck, N., Vollhardt, D., Miller, R., Pison, U.

Nearly universal crossing point of the specific heat curves of Hubbard models (1998)

Chandra, N., Kollar, M., Vollhardt, D.

A nearly universal feature of the specific heat curves C(T,U) vs. T for different U of a general class of Hubbard models is observed. That is, the value C_+ of the specific heat curves at their...

Disorder and Impurities in Hubbard-Antiferromagnets (1998)

Ulmke, M., Denteneer, P. J. H., Janis, V., Scalettar, R. T., Singh, A., Vollhardt, D., ...

We study the influence of disorder and randomly distributed impurities on the properties of correlated antiferromagnets. To this end the Hubbard model with (i) random potentials, (ii) random hopping...

Metallic ferromagnetism: Progress in our understanding of an old strong-coupling problem (1998)

Vollhardt, D., Blümer, N., Held, K., Kollar, M., Schlipf, J., Ulmke, M., ...

Metallic ferromagnetism is in general an intermediate to strong coupling phenomenon. Since there do not exist systematic analytic methods to investigate such types of problems, the microscopic origin...

Microscopic conditions favoring itinerant ferromagnetism: Hund's rule coupling and orbital degeneracy (1998)

Held, K., Vollhardt, D.

The importance of Hund's rule coupling for the stabilization of itinerant ferromagnetism is investigated within a two-band Hubbard model. The magnetic phase diagram is calculated by...

Frustration of antiferromagnetism in the t-t'-Hubbard model at weak coupling (1998)

Hofstetter, W., Vollhardt, D.

The perfect-nesting instability towards antiferromagnetism of the Hubbard model is suppressed by next-nearest neighbor hopping t'. The exact asymptotic behavior of the critical coupling U_c(t') at...

Relating domain morphology and lattice structure in monolayers of glycerol amide lipids. (1998)

Gehlert, U., Weidemann, G., Vollhardt, D., Brezesinski, G., Wagner, R., Möhwald, H.

Amphiphilic proline and prolylproline derivatives in the rhodium(I)-catalyzed asymmetric hydrogenation in water - chiral induction as indication of the location of reactants within the micelle. (1998)

Grassert, I., Schinkowski, K., Vollhardt, D., Oehme, G.

Spreading concentration effect on the morphology of phospholipid monolayers. (1998)

Li, J. B., Miller, R., Vollhardt, D., Möhwald, H.

Atomic force microscopy study of the texture of condensed phase domains in 1-monostearoylglycerol monolayers. (1998)

Meine, K., Vollhardt, D., Weidemann, G.

Melzer, V., Vollhardt, D., Brezesinski, G., Möhwald, H.

Competition of interactions in monolayers of amphiphilic acid amides at the air-water interface. (1998)

Melzer, V., Vollhardt, D., Brezesinski, G., Möhwald, H.

Structure formation and phase transitions in gibbs and langmuir monolayers of amphiphilic acid amides. (1998)

Melzer, V., Vollhardt, D., Weidemann, G., Brezesinski, G., Wagner, R., Möhwald, H.

Phasenübergänge und Strukturen von Monoschichten wasserlöslicher amphiphiler Säureamide. (1998)

Melzer, V., Weidemann, G., Wagner, R., Vollhardt, D., Brezesinski, G., Möhwald, H.

Phase transitions and structures in monolayers of water soluble and insoluble amphiphilic acid amides. (1998)

Melzer, V., Weidemann, G., Wagner, R., Vollhardt, D., Dewolf, C., Brezesinski, G., ...

Crystal structure of sodium 2-(N′-N-decylureido) ethanesulfonate, C13H27N2O4SNa. (1998)

Rudert, R., Vollhardt, D.

Crystal structure of sodium 2-(N′-N-dodecylureido) ethanesulfonate, C15H31N2O4SNa. (1998)

Rudert, R., Vollhardt, D.

Surface phase behavior and surface tension evolution for lysozyme adsorption onto clean interfaces and into dppc monolayers - theory and experiment. (1998)

Sundaram, S., Ferri, J. K., Vollhardt, D., Stebe, K. J.

Nucleation and growth of three-dimensional aggregates in supersaturated monolayers at the air-water interface: constant surface pressure relaxation of methyl stearate. (1998)

Effect of the molecular structure on the adsorption of alkyl ether sulphates and alkane ether sulphonates at the air-water interface. (1998)

Vollhardt, D., Czichocki, G., Rudert, R.

Phase transition in adsorption layers at the air-water interface - structure features of the condensed phase. (1998)

Vollhardt, D., Melzer, V., Fainerman, V. B.

Growth of preformed 3D nuclei in Langmuir monolayers below critical supersaturation. (1998)

Vollhardt, D., Retter, U.

Texture change separate from the transition between two tilted phases in Langmuir monolayers. (1998)

Weidemann, G., Brezesinski, G., Vollhardt, D., Möhwald, H.

Disorder in Langmuir monolayers - 1 - Disordered packing of alkyl chains. (1998)

Weidemann, G., Brezesinski, G., Vollhardt, D., Möhwald, H.

Microscopic conditions favoring itinerant ferromagnetism (1997)

Wahle, J., Blümer, N., Schlipf, J., Held, K., Vollhardt, D.

A systematic investigation of the microscopic conditions stabilizing itinerant ferromagnetism of correlated electrons in a single-band model is presented. Quantitative results are obtained by quantum...

Pair Correlations in Superfluid Helium 3 (1997)

Non-perturbative approaches to magnetism in strongly correlated electron systems (1997)

In 1996 Lee, Osheroff and Richardson received the Nobel Prize for their 1971 discovery of superfluid helium 3 -- a discovery which opened the door to the most fascinating system known in condensed...

Held, K., Ulmke, M., Bl"umer, N., Vollhardt, D.

The microscopic origin of metamagnetism and metamagnetic transitions in strongly anisotropic antiferromagnets is investigated within a quantum mechanical theory of correlated electrons. To this end...

Vollhardt, D., Blümer, N., Held, K., Kollar, M., Schlipf, J., Ulmke, M.

The microscopic basis for the stability of itinerant ferromagnetism in correlated electron systems is examined. To this end several routes to ferromagnetism are explored, using both rigorous methods...

A consideration of the hydrogen bonding schemes of the surfactant N-tetradecyl-(2,4-dihydroxy)-butanoic acid amide and some related amphiphilic compounds (1997)

Rudert, R., Andre, C., Wagner, R., Vollhardt, D.

Kinetics of two-dimensional phase transition of amphiphilic monolayers at the air/water interface (1997)

Fainerman, V. B., Vollhardt, D., Melzer, V.

Atomic force microscopy and X-ray studies of three-dimensional islands on monolayers (1997)

Meine, K., Weidemann, G., Vollhardt, D., Brezesinski, G., Kondrashkina, E. A.

Brewster angle microscopy and X-ray GID studies of morphology and crystal structure in monolayers of N-tetradecyl-gamma,delta-dihydroxypentanoic acid amide (1997)

Melzer, V., Weidemann, G., Vollhardt, D., Brezesinski, G., Wagner, R., Struth, B., ...

Nonequilibrium domain growth in fatty acid ethyl ester monolayers (1997)

Nonequilibrium structures in 1-monopalmitoyl-rac-glycerol monolayers (1997)

Gehlert, U., Vollhardt, D.

Phase transition in adsorption layers at the air-water interface: Bridging to Langmuir monolayers (1997)

Vollhardt, D., Melzer, V.

Phase transitions in adsorption layers: comparison with Langmuir monolayers (1997)

Melzer, V., Vollhardt, D.

Structure features and phase behaviour of amphiphilic N-tetradecyl-beta-hydroxy-propionic acid amide monolayers (1997)

Melzer, V., Weidemann, G., Vollhardt, D., Brezesinski, G., Wagner, R., Struth, B., ...

Characteristic Crossing Points in Specific Heat Curves of Correlated Systems (1996)

Axisymmetric drop shape analysis as a film balance: Rate dependence of the collapse pressure and molecular area at close packing of 1-octadecanol monolayers (1996)

Attention is drawn to the observation that in many correlated systems (e.g. 3He, heavy fermion systems and Hubbard models) the specific heat curves, when plotted for different values of some...

Kwok, D. Y., Tadros, B., Deol, H., Vollhardt, D., Miller, R., Cabrerizo-Vilchez, M. A., ...

2D-3D transformations of amphiphilic monolayers influenced by intermolecular interactions: A Brewster angle microscopy study (1996)

Angelova, A., Vollhardt, D., Ionov, R.

An investigation of the compression rate dependence on the surface pressure-surface area isotherm for a dipalmitoyl phosphatidylcholine monolayer at the air/water interface (1996)

Jyoti, A., Prokop, R. M., Li, J., Vollhardt, D., Kwok, D. Y., Miller, R., ...

Axisymmetric drop shape analysis as a method to study dynamic surface tensions (1996)

Kwok, D. Y., Cabrerizo-Vilchez, M. A., Gomez, Y., Susnar, S. S., Del Rio, O., Vollhardt, D., ...

Chiral discrimination and pattern formation in N- dodecylmannonamide monolayers at the air-water interface (1996)

Vollhardt, D., Emrich, G., Gutberlet, T., Fuhrhop, J. H.

Chiral discrimination in monolayers of monoglycerides (1996)

Gehlert, U., Vollhardt, D., Brezesinski, G., Möhwald, H.

Crystal and molecular structure of sodium dodecyl(oxyethylene)sulphate hydrate (1996)

Rudert, R., Schulz, B., Czichocki, G., Vollhardt, D.

Determination of the nucleus-to-surroundings interfacial tensions and the line tension of lenticular nuclei formed from insoluble monolayers at the air-water interface (1996)

Retter, U., Siegler, K., Vollhardt, D.

Diversity in the two-dimensional morphology of monoglycerides (1996)

Vollhardt, D., Gehlert, U.

Domain pattern instability of a lipid monolayer induced by adsorption/desorption of a cyanine dye (1996)

Angelova, A., Vollhardt, D., Ionov, R.

Equation of state for insoluble monolayers of aggregating amphiphilic molecules (1996)

Fainerman, V. B., Vollhardt, D., Melzer, V.

Foam-like patterns in myristyl alcohol monolayers (1996)

Formation of condensed phase patterns in adsorption layers (1996)

Melzer, V., Vollhardt, D.

Isotherms of phospholipid monolayers measured by a pendant drop technique (1996)

Li, J. B., Miller, R., Vollhardt, D., Weidemann, G., Möhwald, H.

Line tension and domain shapes in insoluble monolayers of fatty alcohols (1996)

Long range tilt orientational order in fatty acid ethyl ester monolayers (1996)

Long-range tilt orientational order in phospholipid monolayers: A comparative study (1996)

Morphology and phase behavior of monolayers (1996)

n-Butyl(carboxymethyl)dimethylammonium bromide and (carboxymethyl)ethyldimethylammonium bromide (1996)

Rudert, R., Schulz, B., Reck, G., Vollhardt, D., Kriwanek, J.

The crystal structure of N-(3-hydroxypropyl)hexadecanamide (1996)

Rudert, R., Wu, J., Vollhardt, D.

Nucleation and growth of three-dimensional structures in supersaturated arachidic acid monolayers: An atomic force microscopy study (1996)

Vollhardt, D., Kato, T., Kawano, M.

Structure of relaxed arachidic acid monolayers studied by X-ray reflectometry and atomic force microscopy (1996)

Kondrashkina, E. A., Hagedorn, K., Vollhardt, D., Schmidbauer, M., Köhler, R.

Studies of morphology and phase behaviour of monolayers (1996)

Drude weight and dc-conductivity of correlated electrons (1995)

Held, K., Ulmke, M., Vollhardt, D.

We present the first correlated-electron theory of metamagnetism in strongly anisotropic antiferromagnets. Quantum-Monte-Carlo techniques are used to calculate the field vs. temperature phase diagram...

Uhrig, G., Vollhardt, D.

The Drude weight $D$ and the dc-conductivity $\sigma_{dc} (T)$ of strongly correlated electrons are investigated theoretically. Analytic results are derived for the homogeneous phase of the Hubbard...

Miscibility of alkanoic and omega-anthrylalkanoic acids in monolayers at the air/water interface studied by means of brewster-angle microscopy (1995)

Ionov, R, Vollhardt, D, Deschryver, Fc

The two-dimensional miscibility of 7-(2-anthryl)heptanoic acid (2A7) and myristic acid (MY) in insoluble monolayers at the air/water interface is studied at different molar ratios by recording...

Brewster-angle microscopy study of supersaturated monolayers of long-chain fatty-acid methyl-esters before and beyond the collapse pressure (1995)

Vollhardt, D., Gutberlet, T.

Concept of surface interaction energy densities - basis for emulsifying properties of organic-solvents immiscible with water (1995)

Richter, L., Vollhardt, D.

Crystal and molecular structure of sodium dodecyl(oxyethylene)sulfate hydrate (1995)

Rudert, R., Schulz, G., Czichocki, G., Vollhardt, D.

Dendritic crystal-growth in N-dodecylgluconamide monolayers at the air-water-interface (1995)

Vollhardt, D., Gutberlet, T., Emrich, G., Fuhrhop, J. H.

Inner structure of condensed-phase domains in monolayers at the air-water-interface (1995)

Weidemann, G., Gehlert, U., Vollhardt, D.

Long-range tilt orientational order in phospholipid monolayers - a comparison of the order in the condensed phases of dimyristoylphosphatidylethanolamine and dipalmitoylphosphatidylcholine (1995)

Long-range tilt orientational order in phospholipid monolayers - the inner structure of dimyristoyl-phosphatidyl-ethanolamine domains (1995)

Miscibility of alkanoic and ω-anthrylalkanoic acids in monolayers at the air/water interface studied by means of Brewster-angle Microscopy (1995)

Angelova, A., Ionov, R., Vollhardt, D., Deschryver, F. C.

Morphological features in 1-monoglyceride monolayers (1995)

Gehlert, U., Weidemann, G., Vollhardt, D.

Morphology and growth of condensed phase structures in N-alkyl-aldonamide monolayers using brewster angle microscopy (1995)

Emrich, G., Vollhardt, D., Gutberlet, T., Kling, B., Fuhrhop, J. H.

N-n-octyl-N,N-dimethylammonio acetic acid hydrobromide (1995)

Rudert, R., Schulz, B., Reck, G., Vollhardt, D., Kriwanek, J.

N-n-undecyl-N,N-dimethylammonio acetic acid hydrobromide (1995)

Rudert, R., Schulz, B., Reck, G., Vollhardt, D., Kriwanek, J.

Relating lattice and domain-structures of monoglyceride monolayers (1995)

Brezesinski, G., Scalas, E., Struth, B., Möhwald, H., Bringezu, F., Gehlert, U., ...

Sodium cyclododecylphosphonic acid monoethyl ester trihydrate (1995)

Rudert, R., Czichocki, G., Weiland, B., Vollhardt, D.

Thermally induced domain growth in fatty acid ester monolayers (1995)

Gutberlet, T., Vollhardt, D.

The X-ray crystal-structure of N-(1-hexadecyl)-D-gluconamide and powder diffraction studies on its lower and higher homologs (n = 9-18) (1995)

Andre, C., Luger, P., Gutberlet, T., Vollhardt, D., Fuhrhop, J. H.

Anderson-Hubbard Model in $d = \infty$ (1994)

Ulmke, M., Janis, V., Vollhardt, D.

We present a detailed, quantitative study of the competition between interaction- and disorder-induced effects in electronic systems. For this the Anderson-Hubbard model with diagonal disorder is...

Axisymmetrical drop shape analysis as a film balance (1994)

Kwok, D. Y., Vollhardt, D., Miller, R., Li, D., Neumann, A. W.

The phase behavior of an ether lipid monolayer compared with an ester lipid monolayer (1994)

Gehlert, U., Vollhardt, D.

Morphological structures in monolayers of long chain alcohols (1994)

Sodium cyclododecyl sulfate trihydrate, Na+.C12H23O4S-.3H2O (1994)

Rudert, R., Vollhardt, D., Czichocki, G.

Adsorption kinetic characterization of the effect of surface-active trace components in aqueous-solutions of surfactants (1993)

Vollhardt, D., Ziller, M.

Alkanolspuren in Natriumalkylsulfaten: Nachweis und Bedeutung für die Adsorptionseigenschaften (1993)

Vollhardt, D., Czichocki, G.

Beeinflussung der Benetzung von Blattoberflächen durch Tenside (1993)

Wicke, G., Vollhardt, D., Richter, L.

Benetzungsspannungsmessungen als Basis für HLB-Werte wasserlöslicher Emulgatoren (1993)

Richter, L., Vollhardt, D.

Direct visualization of monolayer structures with a brewster angle microscope (1993)

Gehlert, U., Siegel, S., Vollhardt, D.

Formation of lenticular nuclei from an insoluble monolayer at the air/water-interface - a model (1993)

Retter, U., Vollhardt, D.

Generalized nucleation growth collision-theory for the formation of lenticular centers from insoluble monolayers (1993)

Vollhardt, D., Ziller, M., Retter, U.

Kontaktwinkeluntersuchungen zur Beurteilung der Benetzung von Blattoberflächen durch wäßrige Lösungen nichtionogener Tenside (1993)

Vollhardt, D., Wicke, G.

Kritische Analyse von Kontaktwinkelmessungen an Blattoberfä¤chen (1993)

Nucleation and growth in supersaturated monolayers (1993)

Penetration - a comparison of various models (1993)

Structural effect on the adsorption properties of aqueous solutions of straight-chain and cyclic dodecyl sulfates (1993)

Vollhardt, D., Czichocki, G., Rudert, R.

Temperature-dependent studies of the phase-behavior of 1- monostearoyl-rac-glycerol monolayers (1993)

Vollhardt, D., Gehlert, U., Siegel, S.

Direct observation of 3-dimensional transformation of insoluble monolayers. (1992)

Siegel, S., Hoenig, D., Vollhardt, D., Moebius, D.

Chain nucleation - a critical consideration of Prout and Tompkins' law (1992)

Retter, U., Vollhardt, D.

Contact angle based evaluation of spray pattern for plant protection (1992)

Determination of trace amounts of alcohols in sodium alkyl sulfate mixtures using high-performance liquid-chromatography and surface-tension measurements (1992)

Czichocki, G., Müller, P., Vollhardt, D., Krüger, M.

Direct observation of 3-dimensional transformation of insoluble monolayers (1992)

Siegel, S., Hönig, D., Vollhardt, D., Möbius, D.

Theoretical evaluation of spray deposits (1992)

Vollhardt, D., Ziller, M., Hoffmann, H.

Nucleation in insoluble monolayers. III. Overlapping effect of growing centres (1992)

Vollhardt, D., Retter, U.

Spray pattern for plant protection (1992)

Temperature dependent surface potential studies of deposited monolayers (1992)

Vollhardt, D., Seeboth, A.

The contact angl effect on the evaluation of spray deposits (1992)

Comment helical textures in 3He-a in superflow and magnetic field (1978)

Helical textures in 3He-A in the presence of superflow and magnetic field (1978)

No abstract available

[MATH]-TEXTURE EFFECTS ON MAGNETIC RESONANCE IN SUPERFLUID 3He (1978)

The existence of helical texture in 3He-A in the presence of both superflow and magnetic field is established theoretically. The helical texture gives rise to an additional positive shift to the...

Vollhardt, D., Kumar, P.

We calculate the effects on the satellite frequencies in NMR due to the changes in spatial variation length scale of the [MATH] vector.

Comment helical textures in 3He-a in superflow and magnetic field (1978)

Helical textures in 3He-A in the presence of superflow and magnetic field (1978)

No abstract available

[MATH]-TEXTURE EFFECTS ON MAGNETIC RESONANCE IN SUPERFLUID 3He (1978)

The existence of helical texture in 3He-A in the presence of both superflow and magnetic field is established theoretically. The helical texture gives rise to an additional positive shift to the...

Vollhardt, D., Kumar, P.

We calculate the effects on the satellite frequencies in NMR due to the changes in spatial variation length scale of the [MATH] vector.

Comment helical textures in 3He-a in superflow and magnetic field (1978)

Helical textures in 3He-A in the presence of superflow and magnetic field (1978)

No abstract available