R. K. Kremer

Exciton doublet in the Mott-Hubbard LiCuVO$_4$ insulator identified by spectral ellipsometry (2009)

Matiks, Y., Horsch, P., Kremer, R. K., Keimer, B., Boris, A. V.

Spectroscopic ellipsometry was used to study the dielectric function of LiCuVO$_{4}$, a compound comprised of chains of edge-sharing CuO$_4$ plaquettes, in the spectral range (0.75 - 6.5) eV at...

Temperature dependent Neel wall dynamics in GaMnAs/GaAs (2009)

Honolka, J., Diez, L. Herrera, Kremer, R. K., Kern, K., Placidi, E., Arciprete, F.

Extensive Kerr microscopy studies reveal a strongly temperature dependent domain wall dynamics in Hall-bars made from compressively strained GaMnAs. Depending on the temperature magnetic charging of...

Electronic, vibrational and thermodynamic properties of beta-HgS (metacinnabar), HgSe and HgTe (2009)

Cardona, M., Kremer, R. K., Lauck, R., Siegle, G., Munoz, A., Romero, A. H.

We report ab initio calculations of the electronic band structure and the phonon dispersion relations of the zincblende-type mercury chalcogenides (beta-HgS, HgSe, and HgTe). The latter have been...

Magnetic Ordering in the Frustrated Heisenberg Chain System Cupric Chloride, CuCl$_2$ (2009)

Banks, M. G., Kremer, R. K., Hoch, C., Simon, A., Ouladdiaf, B., ...

We report a detailed examination the magnetic structure of anhydrous cupric chloride CuCl2 carried out by powder neutron diffraction, magnetic susceptibility and specific heat measurements on...

Point-contact Andreev-reflection spectroscopy in ReFeAsO_{1-x}F_x (Re = La, Sm): Possible evidence for two nodeless gaps (2009)

Gonnelli, R. S., Daghero, D., Tortello, M., Ummarino, G. A., Stepanov, V. A., Kremer, R. K., ...

A deep understanding of the character of superconductivity in the recently discovered Fe-based oxypnictides ReFeAsO1-xFx (Re = rare-earth) necessarily requires the determination of the number of the...

Spontaneous stoichiometry change in a single crystal of (Ba1-x Kx)Fe2As2 produced by rapid heating method (2009)

Reuvekamp, P., Razavi, F. S., Hoch, C., Kim, J. S., Kremer, R. K., Simon, A.

To prevent the loss of K in growing single crystals of Ba1-x Kx Fe2 As2 we developed a rapid heating Sn-flux method. Large single crystals with the optimal superconducting transition temperature TC...

Raman scattering from the CaC6 superconductor in the presence of disorder (2009)

Mialitsin, A., Kim, J. S., Kremer, R. K., Blumberg, G.

Polarized Raman scattering has been performed on CaC6 superconductor. We identify two of the three Raman active Eg phonon modes at 440 and 1508 cm-1 expected for the R-3m space group of CaC6. These...

Ferromagnetism and lattice distortions in the perovskite YTiO§3. (2009)

Knafo, W., Meingast, C., Boris, A.V., Popovich, P., Kovaleva, N.N., Yordanov, P., ...

Physical Review B, 79(2009) S.054431/1-10

Ferromagnetism and Lattice Distortions in the Perovskite YTiO$_3$ (2008)

Knafo, W., Meingast, C., Löhneysen, H. V., Boris, A. V., Popovich, P., Kovaleva, N. N., ...

The thermodynamic properties of the ferromagnetic perovskite YTiO$_3$ are investigated by thermal expansion, magnetostriction, specific heat, and magnetization measurements. The low-temperature...

Lattice Dynamics and Specific Heat of $\alpha$ - GeTe: a theoretical and experimental study (2008)

Shaltaf, R., Gonze, X., Cardona, M., Kremer, R. K., Siegle, G.

We extend recent \textit{ab initio} calculations of the electronic band structure and the phonon dispersion relations of rhombohedral GeTe to calculations of the density of phonon states and the...

Magnetic crossover and complex excitation spectrum of the ferromagnetic/antiferromagnetic spin-1/2 chain system alpha-TeVO4 (2008)

Gnezdilov, V., Lemmens, P., Zvyagin, A. A., Cheranovskii, V. O., Lamonova, K., Pashkevich, Yu. G., ...

We report magnetic susceptibility, specific heat, and Raman scattering investigations of alpha-TeVO4 containing V-O edge-sharing chains. These chains promote a system of...

Lattice Properties of PbX (X = S, Se, Te): Experimental Studies and ab initio Calculations Including Spin-Orbit Effects (2008)

Romero, A. H., Cardona, M., Kremer, R. K., Lauck, R., Siegle, G., Serrano, J., ...

During the past five years the low temperature heat capacity of simple semiconductors and insulators has received renewed attention. Of particular interest has been its dependence on isotopic masses...

Coexistence of two order parameters and a pseudogap in the iron-based superconductor LaFeAsO1-xFx (2008)

Gonnelli, R. S., Daghero, D., Tortello, M., Ummarino, G. A., Stepanov, V. A., Kim, J. S., ...

The determination of the order parameter (OP) and its symmetry has always been of crucial importance in the study of superconducting materials. The recent discovery of high-temperature...

Signatures of Electronic Correlations in Optical Properties of LaFeAsO$_{1-x}$F$_x$ (2008)

Boris, A. V., Kovaleva, N. N., Seo, S. S. A., Kim, J. S., Popovich, P., Matiks, Y., ...

Spectroscopic ellipsometry is used to determine the dielectric function of the superconducting LaFeAsO$_{0.9}$F$_{0.1}$ ($T_c$ = 27 K) and undoped LaFeAsO polycrystalline samples in the wide range...

Complex domain wall dynamics in compressively strained GaMnAs epilayers (2008)

Diez, L. Herrera, Kremer, R. K., Enders, A., Rössle, M., Arac, E., Honolka, J., ...

The domain wall induced reversal dynamics in compressively strained GaMnAs was studied employing the magneto-optical Kerr effect and Kerr microscopy. Due to the influence of an uniaxial part in the...

Epitaxial growth and properties of (001)-oriented TbBaCo2O6-α films (2008)

Kasper, N. V., Wochner, P., Vigliante, A., Dosch, H., Jakob, G., Carstanjen, H. D., ...

Epitaxial growth and properties of (001)-oriented TbBaCo2O6-α films (2008)

Kasper, N. V., Wochner, P., Vigliante, A., Dosch, H., Jakob, G., Carstanjen, H. D., ...

Magnetic crossover and complex excitation spectrum of the ferromagnetic/antiferromagnetic spin-½ chain system α-TeVO4 (2008)

Gnezdilov, V., Lemmens, P., Zvyagin, A. A., Cheranovskii, V. O., Lamonova, K., Pashkevich, Y. G., ...

Muon-spin rotation study of magnetism in NaxCoO₂ single crystals with 0.78 ≼ x ≼ 0.97 (2007)

Bernhard, Christian, Niedermayer, Ch., Drew, Alan, Khaliullin, G., Bayrakci, S., Strempfer, J., ...

By muon spin rotation we investigated the magnetic properties of a series of highly Na-doped NaxCoO₂ single crystals with 0.78(1) ≼ x ≼ 0.97(1). Our data provide evidence for an intrinsically...

Muon-spin rotation study of magnetism in NaxCoO₂ single crystals with 0.78 ≼ x ≼ 0.97 (2007)

Bernhard, Christian, Niedermayer, Ch., Drew, Alan, Khaliullin, G., Bayrakci, S., Strempfer, J., ...

By muon spin rotation we investigated the magnetic properties of a series of highly Na-doped NaxCoO₂ single crystals with 0.78(1) ≼ x ≼ 0.97(1). Our data provide evidence for an intrinsically...

Metal-nonmetal transition and colossal negative magnetoresistance in the gadolinium hydride halides GdIHx (0.67 < x < 1) (2006)

Ryazanov, M., Kremer, R. K., Simon, A., Mattausch, Hj.

We report magnetization, specific heat, and resistivity measurements of the metal-rich hydride halides YIHx and GdIHx (0.6 < x < 1.0) as a function of temperature and applied magnetic field. A strong...

On the conflicting pictures of magnetism for the frustrated triangular lattice antiferromagnet CuFeO2 (2006)

Whangbo, M. H., Dai, D. D., Lee, K. S., Kremer, R. K.

The magnetic structures of the triangular lattice antiferromagnet CuFeO2 below 14 K are described by an Ising model despite the fact that its high-spin Fe3+ (d(5)) ions (S = 5/2, L = 0) cannot have a...

Heat capacity of ZnO: Isotope effects (2006)

Serrano, J., Kremer, R. K., Cardona, M., Siegle, G., Romero, A. H., Lauck, R.

We have measured the heat capacity of zinc oxide for several single crystals with different isotopic compositions in the 5-350 K temperature range. We have performed first-principles calculations in...

Quasi-one-dimensional molecular magnets based on derivatives of (fluorobenzyl) pyridinium with the [M(mnt)2] monoanion (M = Ni, Pd or Pt; mnt2- = maleonitriledithiolate): Syntheses, crystal structures and magnetic properties (2006)

Ren, X. M., Nishihara, S., Akutagawa, T., Noro, S., Nakamura, T., Fujita, W., ...

The syntheses, structural characterizations and magnetic behaviors of three new complexes, 1-(3', 4', 5'- trifluorobenzyl) pyridinium [M(mnt)(2)](-) [M = Ni (1), Pd (2) or Pt (3)], are reported....

Fe3GeTe2 and Ni3GeTe2 – Two new layered transition-metal compounds: Crystal structures, HRTEM investigations, and magnetic and electrical properties (2006)

Deiseroth, H. J., Aleksandrov, K., Reiner, C., Kienle, L., Kremer, R. K.

Fe3GeTe2 and Ni3GeTe2 are two new air-stable, black-metallic solids. They were characterized by single-crystal X-ray crystallography, high resolution transmission electron microscopy (HRTEM), and...

Paramagnetic relaxation of spin polarized 3He at coated glass walls – Part II (2006)

Deninger, A., Heil, W., Otten, E. W., Wolf, M., Kremer, R. K., Simon, A.

In this second in a series of three papers on wall relaxation of He-3-spins we discuss relaxation in metal-coated glass cells in terms of hyperfine coupling to paramagnetic conduction electrons at...

Paramagnetic relaxation of spin polarized 3He at bare glass surfaces – Part I (2006)

Schmiedeskamp, J., Heil, W., Otten, E. W., Kremer, R. K., Simon, A., Zimmer, J.

In this first in a series of three papers on wall relaxation of spin polarized, gaseous He-3 we investigate both by theory and by experiment surface-induced spin relaxation due to paramagnetic sites...

Specific Heat of the Ca-Intercalated Graphite Superconductor CaC6 (2006)

Kim, J.S., Kremer, R.K., Boeri, L., Razavi, F.S.

A new low temperature modification of TaTe2 – comparsion to the room temperature and a hypothetical 1T-TaTe2 modification (2006)

Sörgel, T., Nuss, J., Wedig, U., Kremer, R.K., Jansen, M.

Lanthanides as d Metals (2006)

Simon, A., Mattausch, Hj., Ryazanov, M., Kremer, R.K.

Electronic and superconducting properties of the binary carbide La2C3 (2006)

Kim, J. S., Kremer, R. K., Jepsen, O., Simon, A.

Crystal structure and magnetic properties of the coupled spin dimer compound SrCu2(TeO3)2Cl2 (2006)

Takagi, R., Johnsson, M., Kremer, R. K., Lemmens, P.

Single crystals of the strontium copper tellurium oxochloride SrCu2,(TeO3)(2)C]2 were synthesized via solid-gas reactions in sealed evacuated silica tubes. The compound crystallizes in the monoclinic...

Crystal structure and magnetic properties of FeTe2O5X (X = Cl, Br): A frustrated spin cluster compound with a new Te(IV) coordination polyhedron (2006)

Becker, R., Johnsson, M., Kremer, R. K., Klauss, H. H., Lemmens, P.

A new layered transition metal oxohalide, FeTe2O5ClxBr1-x, has been identified. It crystallizes in the monoclinic space group P2(1)/c. The unit cell for FeTe2O5Br is a = 13.3964(8), b = 6.5966(4), c...

Effect of pressure on superconducting Ca-intercalated graphite CaC6 (2006)

Kim, J. S., Boeri, L., Kremer, R. K., Razavi, F. S.

The effect of pressure on the superconducting transition temperature (T-c) of the Ca-intercalated graphite compound CaC6 has been investigated up to similar to 16 kbar. T-c is found to increase under...

M3NS3 (M = La-Nd, Sm, Gd-Dy): Structure and magnetism of 3:1:3-type nitride sulfides of trivalent lanthanides (2006)

Lissner, F., Meyer, M., Kremer, R. K., Schleid, T.

Nitride sulfides of the trivalent lanthanides with the composition M3NS3 (M = La - Nd, Sm, Gd - Dy) can be prepared by the oxidation of the respective lanthanide metal with sulfur, sodium azide...

Anion substitution effects on structure and magnetism of the chromium chalcogenide Cr5Te8 – Part II: Cluster-glass and spin-glass behavior in trigonal Cr(1+x) Q2 with basic cells and trigonal Cr(5+x) Q8 with superstructures (Q = Te, Se; Te:Se = 6:2) (2006)

Huang, Z. L., Bensch, W., Mankovsky, S., Polesya, S., Ebert, H., Kremer, R. K.

The effect of substitution of up to two Te atoms by Se atoms on the crystal structure, the magnetic and electronic properties has been studied in the system Cr(5+x)Te8-ySey. Trigonal basic cells with...

Magnetic glassy phase in Zn0.85Fe0.15O diluted magnetic semiconducting nanoparticles (2006)

Mandal, S. K., Nath, T. K., Das, A., Kremer, R. K.

The authors have investigated the ground state magnetic phase and the optical band gap of chemically synthesized Zn0.85Fe0.15O diluted magnetic semiconducting nanoparticles (similar to 7.5 nm). The...

Investigation of the oxohalide Cu4Te5O12Cl4 with weakly coupled Cu(II) tetrahedra (2006)

Takagi, R., Johnsson, M., Gnezdilov, V., Kremer, R. K., Brenig, W., Lemmens, P.

The crystal structure of the copper(II) tellurium(IV) oxochloride Cu4Te5O12Cl4 (Cu-45124) is composed of weakly coupled tetrahedral Cu clusters and shows crystallographic similarities with the...

On the origin of the metallic and anisotropic magnetic properties of NaxCoO2 (x≈0.75) (2006)

Whangbo, M. H., Dai, D., Kremer, R. K.

Nonstoichiometric NaxCoO2 (0.5 < x < 1) consists of CoO2 layers made up of edge-sharing CoO6 octahedra and exhibits strongly anisotropic magnetic susceptibilities as well as metallic properties. A...

Lanthanide als d Elemente (2006)

Simon, A., Mattausch, Hj., Ryazanov, M., Kremer, R. K.

Quantum helimagnetism of the frustrated spin-1/2 chain LiCuVO4 (2005)

Enderle, M., Mukherjee, C., Fåk, B., Kremer, R. K., Broto, J. M., Rosner, H., ...

Band Filling and Interband Scattering Effects in MgB2: Carbon versus Aluminum Doping (2005)

Kortus, J., Dolgov, O. V., Kremer, R. K., Golubov, A. A.

Heat capacity of isotopically enriched 28Si, 29Si and 30Si in the temperature range 4 K < T < 100 K (2005)

Gibin, A., Devyatykh, G. G., Gusev, A. V., Kremer, R. K., Cardona, M., Pohl, H.

Structural and magnetic properties of Mn2GeSe4 (2005)

Deiseroth, H. J., Aleksandrov, K., Kremer, R. K.

Synthesis, crystal structure, magnetic properties, and electronic structure of the new ternary vanadate CuMnVO4 (2005)

Yahia, H. B., Gaudin, E., Darriet, J., Banks, M., Kremer, R. K., Villesuzanne, A., ...

Quantum interference of electrons in Nb5-δTe4 single crystals (2005)

Stolovits, A., Sherman, A., Kremer, R. K., Mattausch, Hj., Okudera, H., Ren, X. M., ...

Helicoidal magnetic order in the spin-chain compound NaCu2O2 (2005)

Capogna, L., Mayr, M., Horsch, P., Raichle, M., Kremer, R. K., Sofin, M., ...

Novel molecular staircase self-assembly from the cations of 1-(4'-nitrobenzyl)pyridinium: synthesis, crystal structure, magnetic property and spin dimer analyses (2005)

Liu, G. X., Ren, X. M., Kremer, R. K., Meng, Q. J.

Observation of unusual hysteretic magnetic properties of the rare earth intermetallic compound PrMnSi2: Magnetic susceptibility, magnetization, heat capacity, and electronic band structure studies (2005)

Kim, S. H., Seo, D. K., Kremer, R. K., Köhler, J., Villesuzanne, A., Whangbo, M. H.

Influence of hydrogen on the magnetic and electrical properties of GdI2Hx (0≤x≤1) (2005)

Ryazanov, M., Simon, A., Kremer, R. K., Mattausch, Hj.

Thermodynamics of two-band superconductors: The case of MgB2 (2005)

Dolgov, O. V., Kremer, R. K., Kortus, J., Golubov, A. A., Shulga, S. V.

Absence of the 90 K structural transition in CuV2S4 crystals grown by chemical vapour transport using TeCl4 (2005)

Crandles, D. A., Reedyk, M., Wardlaw, G., Razavi, F. S., Hagino, T., Nagata, S., ...

Heat capacity of α-GaN: Isotope effects (2005)

Kremer, R. K., Cardona, M., Schmitt, E., Blumm, J., Estreicher, S. K., Sanati, M., ...

Structural properties of the sesquicarbide superconductor La2C3 at high pressure (2005)

Wang, X., Loa, I., Syassen, K., Kremer, R. K., Simon, A., Hanfland, M., ...

V4S9Br4: A novel high-spin vanadium cluster thiobromide with square-planar metal core (2005)

Mironov, Y. V., Yarovoi, S. S., Naumov, D. Y., Kozlova, S. G., Ikorsky, V. N., Kremer, R. K., ...

Kortus et al. Reply (2005)

Kortus, J., Dolgov, O. V., Kremer, R. K., Golubov, A. A.

Quantum helimagnetism of the frustrated spin-(1)/(2) chain LiCuVO4 (2005)

Enderle, M., Mukherjee, C., Fak, B., Kremer, R. K., Broto, J. M., Rosner, H., ...

Inelastic neutron scattering, susceptibility, and high-field magnetization identify LiCuVO4 as a nearest-neighbour ferromagnetic, next-nearest-neighbour frustrated, quasi-one-dimensional helimagnet,...

Quantum interference of electrons in Nb_{5-\delta}Te_4 single crystals (2004)

Stolovits, A., Sherman, A., Kremer, R. K., Mattausch, Hj., Okudera, H., Ren, X-M., ...

The compound $Nb_{5-\delta}Te_4$ ($\delta=0.23$) with quasi-one-dimensional crystal structure undergoes a transition to superconductivity at $T_c$=0.6--0.9 K. Its electronic transport properties in...

Spin fluctuations in the quasi-two dimensional Heisenberg ferromagnet GdI_2 studied by Electron Spin Resonance (2004)

Deisenhofer, J., Loidl, A., Ahn, K., Kremer, R. K., Simon, A.

The spin dynamics of GdI_2 have been investigated by ESR spectroscopy. The temperature dependences of the resonance field and ESR intensity are well described by the model for the spin susceptibility...

Triapua-1κO,2κO,3κO-hexakis-μ-chloroacetato-1:2κ4O:O';2:3κ4O:O';1:3κ4O:O'-μ3-oxo-triiron(III) nitrate trihydrate (2004)

Okudera, H., Kremer, R. K.

The title compound, [Fe3O(C2H2ClO2)(6)(H2O)(3)]NO3.3H(2)O, contains an Fe-III trimeric cation in which the three Fe-III ions are at the corners of a slightly distorted triangle with an O atom in the...

Magnetic properties and low temperature X-ray studies of the weak ferromagnetic monoclinic and trigonal chromium tellurides Cr5Te8 (2004)

Lukoschus, K., Kraschinski, S., Nather, C., Bensch, W., Kremer, R. K.

Monoclinic and trigonal CrsTe(8) show a transition into the ferromagnetic state with a Curie temperature T-c. which sensitively depends oil the actual Composition. Monoclinic samples exhibit a lower...

Hydrothermal syntheses, characterizations and crystal structures of a new lead(II) carboxylate-phosphonate with a double layer structure and a new nickel(II) carboxylate-phosphonate containing a hydrogen-bonded 2D layer with intercalation of ethylenediamines (2004)

Song, J. L., Mao, J. G., Sun, Y. Q., Zeng, H. Y., Kremer, R. K., Clearfield, A.

Hydrothermal reactions of N,N-bis(phosphonomethyl)aminoacetic acid (HO2CCH2N(CH2PO3H2)(2)) With metal(II) salts afforded two new metal carboxylate-phosplionates, namely,...

Li-Cu exchange in intercalated Cu3N - With a remark on Cu4N (2004)

Gulo, F., Simon, A., Köhler, J., Kremer, R. K.

Spin fluctuations in the quasi-two-dimensional Heisenberg ferromagnet GdI2 studied by electron spin resonance (2004)

Deisenhofer, J., Loidl, A., Ahn, K., Kremer, R. K., Simon, A.

The spin dynamics of GdI2 have been investigated by electron spin resonance (ESR) spectroscopy. The temperature dependences of the resonance field and ESR intensity are well described by the model...

Ionic pair complexes with well-separated columnar stack structure based on [Pt(mnt)2]- ions showing unusual magnetic transition: Syntheses, crystal structures, and magnetic properties (2004)

Okudera, H., Kremer, R. K., Song, Y., He, C., Meng, Q. J., ...

Three ion pair complexes, [4-R-benzylpyridinium][bis(maleodinitriledithiolato)platinum(III)] (abbreviated as [RBzPy]-[Pt(mnt)(2)]; R = Cl (1), Br (2), or NO2 (3)), have been synthesized. The cations...

The structural change of lanthanum diiodide upon hydrogenation (2004)

Ryazanov, M., Simon, A., Mattausch, Hj., Kremer, R. K.

Slowly heating LaI2 under 1 atm hydrogen to 650degreesC leads to LaI2H, analyzed as LaI2H0.95(3), accompanied by a structural change from tetragonal to hexagonal. Sharp reflections in the XRD pattern...

Elastic neutron diffraction study of long-range antiferro-magnetic order in the S=1/2 quantum chain system CuSb2O6 (2004)

Gibson, B., Kremer, R. K., Prokofiev, A., Assmus, W., Ouladdiaf, B.

CuSb2O6 crystallizes with a monoclinically distorted variant of the trirutile structure type with Cu2+ ions arranged in square planar nets being structurally well separated from each other by Sb-O...

Investigation of the magneto-structural phase transition in [1-benzyl-4-aminopyridinium] [bis(maleonitriledithiolato)nickelate] (2004)

Kremer, R. K., Meng, Q. J.

[1-benzyl-4-aminopyridinium][bis(maleonitriledithiolato)nickelate] contains [ni(mnt)(2)](2) (S= 1/2) tetramer units. It shows an unusual transition to a nonmagnetic ground state associated with a...

Thermal Conductivity of Isotopically Enriched 28Si: Revisited (2004)

Kremer, R. K., Graf, K., Cardona, M., Devyatykh, G. G., Gusev, A. V., Gibin, A. M., ...

Incommensurate Antiferromagnetic Order in the S=1/2 Quantum Chain Compound LiCuVO4 (2004)

Gibson, B. J., Kremer, R. K., Prokofiev, A. V., Assmus, W., McIntyre, G. J.

Effect of Geometrical Frustration on the Magnetic Properties of the Triangular-Layer System Tb2C2I2: A Neutron Diffraction Investigation (2004)

Ahn, K., Kremer, R. K., Simon, A.

Calorimetric Study of the Pyrochlore Compounds Gd2Mo2O7 and Sm2Mo2O7 (2004)

Schnelle, W., Kremer, R. K.

Synthesis and characterization of a magnetic semiconductor Na2RuO4 containing one-dimensional Chains of Ru6+ (2004)

Shikano, M., Kremer, R. K., Ahrens, M., Darriet, J.

Vibrational Spectra and Magnetic Properties of Eu3[BN2]2 and LiEu4[BN2]3 (2004)

Somer, M., Gül, C., Müllmann, R., Mosel, B. D., Kremer, R. K., Pöttgen, R.

Superconductivity and Magnetoresistance in Unusual Layered Rare Earth Halides and Rare Earth Carbides (2004)

Kremer, R. K., Simon, A.

Formation of complex three- and one-dimensional interpenetrating networks within carbodiimide chemistry: NCN2--coordinated rare-earth-metal tetrahedra and condensed alkali-metal iodide octahedra in two novel lithium europium carbodiimide iodides, LiEu2(NCN)I3 and LiEu4(NCN)3I3 (2004)

Liao, W. P., Hu, C. H., Kremer, R. K., Dronskowski, R.

Flux and chemical vapor transport growth and characterization of α- and β-VO(PO3)2 single crystals (2004)

Prokofiev, A. V., Assmus, W., Kremer, R. K.

Calorimetric study of the pyrochlore compounds Gd2Mo2O7 and Sm2Mo2O7 (2004)

Schnelle, W., Kremer, R. K.

Polar phonons in the antiferromagnetic S=1/2 spin-chain system CuSb2O6 (2003)

Torgashev, V. I., Shirokov, V. B., Prokhorov, A. S., Gorshunov, B., Haas, P., Dressel, M., ...

Pressure dependence of TC of the layered superconductor Y2C2I2: lattice versus electronic effects (2003)

Ahn, K., Grzechnik, A., Kremer, R. K., Simon, A., Marshall, W. G.

Synthesis, crystal structures and properties of two new metal complexes of syn-2pyridinealdoxime with a "metallocrown" unit and a 1D double chain structure (2003)

Song, J. L., Mao, J. G., Zeng, H. Y., Kremer, R. K., Dong, Z. C.

Synthesis, crystal structures and properties of two new metal complexes of syn-2 pyridinealdoxime with a `metallocrown' unit and a 1D double chain structure (2003)

Kremer, R. K.

Antiferromagnetic ordering and magnetic structure of the layered cerium carbide halides, Ce2C2X2 (X = Br, I) (2002)

Gibson, B. J., Ahn, K., Kremer, R. K., Simon, A.

Magnetic ordering within the layered terbium carbide iodide, Tb2C2I2 (2001)

Ahn, K., Gibson, B. J., Kremer, R. K., Mattausch, Hj., Keller, L., Simon, A.

Unexpected spin-glass behavior of the mixed sulfide-selenide chalcogenides TlCr5S8-ySey (y=1-7) mediated by the nonmagnetic sublattice (2001)

Bensch, W., Sander, B., Kremer, R. K., Kockelmann, W.

Synthesis, crystal structure, magnetic properties and spin glass behaviour of the new ternary compound Cr4TiSe8 (2001)

Bensch, W., Sander, B., Nather, C., Kremer, R. K., Ritter, C.

Large magnetoresistance and critical spin fluctuations in Gdl2 (2001)

Eremin, I., Thalmeier, P., Fulde, P., Kremer, R. K., Ahn, K., Simon, A.

Structure and chemical bonding of UAuGe (2001)

Gibson, B. J., Kremer, R. K., Jepsen, O., Garrett, J. D., Hoffmann, R. D., Pöttgen, R.

Crystal and magnetic structure of antiferromagnetic HoAuGe (2001)

Gibson, B. J., Pöttgen, R., Schnelle, W., Ouladdiaf, B., Kremer, R. K.

Optical properties of the organic metal (BEDT-TTF)4[Ni(dto)2] (2001)

Griesshaber, E., Haas, P., Thoms, J., Darjushkin, A., Gorshunov, B. P., Dressel, M., ...

Cuprate/manganite superlattices, a model system for a bulk ferromagnetic superconductor (2001)

Cristiani, G., Kremer, R. K., Lebedev, O., Van Tendeloo, G.

MgB2 under pressure: phonon calculations, Raman spectroscopy, and optical reflectance (2001)

Kunc, K., Loa, I., Syassen, K., Kremer, R. K., Ahn, K.

Isotope effects in CuGeO3 studied by Raman spectroscopy (2001)

Loa, I., Gronemeyer, S., Thomsen, C., Kremer, R. K.

Vanadium oxides V2O5 and NaV2O5 under high pressures: Structural, vibrational, and electronic properties (2001)

Loa, I., Grzechnik, A., Schwarz, U., Syassen, K., Hanfland, M., Kremer, R. K.

Tb16Br23B4: Tetrameric terbium clusters with endohedral boron atoms (2001)

Mattausch, Hj., Vajenine, G. V., Oeckler, O., Kremer, R. K., Simon, A.

A 119Sn and 151Eu Mössbauer spectroscopic, magnetic susceptibility, and electrical conductivity investigation of the stannides EuTSn (T = Cu, Pd, Ag, Pt) (2001)

Müllmann, R., Ernet, U., Mosel, B. D., Eckert, H., Kremer, R. K., Hoffmann, R. D., ...

Spin chirality and polarised neutron scattering (2001)

Plakhty, V. P., Maleyev, S. V., Kulda, J., Visser, E. D., Wosnitza, J., Moskvin, E. V., ...

Crystal growth and magnetic properties of α-CuV2O6 (2001)

Prokofiev, A. V., Kremer, R. K., Assmus, W.

Thermodynamic properties and magnetism of Ce3Cu3Sb4 (2001)

Schnelle, W., Kremer, R. K.

A quantitative determination of magnetic fluctuations in CuGeO3 (2001)

Smith, T. J., Capellmann, H., Kremer, R. K., Ziebeck, K. R. A.

Magnetoresistance study of Ta4Te4Si fibers (2001)

Stolovits, A., Ahn, K., Kremer, R. K., Sherman, A.

Preparation, crystal structure, and properties of barium pernitride, BaN2 (2001)

Vajenine, G. V., Auffermann, G., Prots, Y., Schnelle, W., Kremer, R. K., Simon, A., ...

Large magnetoresistance and critical spin fluctuations in GdI2 (2001)

Eremin, I., Thalmeier, P., Fulde, P., Kremer, R. K., Ahn, K., Simon, A.

Crystal and magnetic structure of antiferromagnetic HoAuGe (2001)

Gibson, B. J., Pöttgen, R., Schnelle, W., Ouladdiaf, B., Kremer, R. K.

Preparation, Crystal Structure, and Properties of Barium Pernitride, BaN2 (2001)

Vajenine, G. V., Auffermann, G., Prots, Y., Schnelle, W., Kremer, R. K., Simon, A., ...

A quantitative determination of magnetic fluctuations in CuGeO3 (2001)

Smith, T.J., Capellmann, H., Kremer, R.K., Neumann, K-U., Ziebeck, K.R.A.

This article was published in the journal, European Physical Journal B [© Springer-Verlag]. It is available at: http://springerlink.metapress.com/openurl.asp?genre=journal&eissn=1434-6036.

Giant negative magnetoresistance in GdI2 (2000)

Ahn, K., Felser, C., Seshadri, R., Kremer, R. K., Simon, A.

Superconductivity in layered lanthanum carbide halides: La2C2(X,X′)2 (X,X′ = Cl, Br, I) (2000)

Ahn, K., Kremer, R. K., Mattausch, Hj., Simon, A.

Evidence for a bulk Meissner state in the ferromagnetic superconductor RuSr2GdCu2O8 from dc magnetization (2000)

Bernhard, C., Tallon, J. L., Brücher, E., Kremer, R. K.

Charge-order-driven spin-Peierls transition in α′-NaxV2O5 (2000)

Fagot-Revurat, Y., Mehring, M., Kremer, R. K.

Two dimensional ordering and fluctuations in α′-NaV2O5 (2000)

Gaulin, B. D., Lumsden, M. D., Kremer, R. K., Lumsden, M. A., Dabkowska, H.

Magnetic structure determination of CeAuGe and CeAgGe (2000)

Gibson, B. J., Pöttgen, R., Kremer, R. K.

Pressure dependence of the transition temperature of layered superconductors Y2C2Br2-xIx (2000)

Henn, R. W., Ahn, K., Krug Von Nidda, H.-A., Kremer, R. K., Simon, A.

Transverse-field muon spin relaxation investigations of the magnetic penetration depth in the carbide superconductors Y2C2(Br,I)2 and YC2 (2000)

Henn, R. W., Bernhard, C., Kremer, R. K., Gulden, T., Simon, A., Blasius, T., ...

Thermodynamics of spin S=1/2 antiferromagnetic uniform and alternating-exchange Heisenberg chains (2000)

Johnston, D. C., Kremer, R. K., Troyer, M., Wang, X., Klümper, A., Bud'ko, S. L., ...

Low-temperature ellipsometry of α′-NaV2O5 (2000)

Presura, C., Damascelli, A., Kremer, R. K.

Optical properties and electronic structure of α′-Na1-xCaxV2O5 (2000)

Presura, C., Dischner, M., Geibel, C., Kremer, R. K.

The effect of annealing conditions on the physical properties of Nd0.67Sr0.33MnO3-δ (2000)

Schnelle, W., Poddar, A., Murugaraj, P., Gmelin, E., Kremer, R. K., Sasaki, K., ...

Quantum interference of electrons in Ta4Te4Si (2000)

Stolovits, A., Sherman, A., Ahn, K., Kremer, R. K.

Magnetic susceptibility investigations on the layered superconductors Y2C2Br2:RE (RE = Gd, Dy, Er) (2000)

Henn, R. W., Kremer, R. K., Simon, A.

Electron paramagnetic resonance of Ce3+ in strontium-barium niobate (2000)

Wingbermühle, J., Meyer, M., Schirmer, O. F., Pankrath, R., Kremer, R. K.

23Na Nuclear Magnetic Resonance Investigation of the Lattice Distortion in alpha-NaxV2O5 (2000)

Fagot-Revurat, Y., Bourdon, X., Mehring, M., Kremer, R. K.

Giant negative magnetoresistance in GdI2: prediction and realization. (1999)

Felser, C., Ahn, K., Kremer, R. K., Seshadri, R., Simon, A.

Raman scattering studies of the carbon atom vibrations in superconducting rare-earth carbide halides RE2C2(X,X′)2 (RE = Y, Gd; X,X′ = Br, I). (1999)

Henn, R. W., Strach, T., Kremer, R. K., Simon, A.

The rare-earth metal carbide halide superconductors RE2C2X2(RE = Y, La; X = Cl, Br, I). (1999)

Kremer, R. K., Ahn, K., Henn, R. W., Mattausch, Hj., Schnelle, W., Stolovits, A., ...

Effect of pressure on the magnetic phase transition in α′-NaV2O5. (1999)

Kremer, R. K., Loa, I., Razavi, F. S., Syassen, K.

The structure and weak ferromagnetism of the double layered cuprocobaltate: Y2SrCu0.6Co1.4O6.5. (1999)

Li, R. K., Kremer, R. K., Maier, J.

Low-energy magnetic excitations in the dimerized and incommensurate phase of CuGeO3. (1999)

Loa, I., Gronemeyer, S., Thomsen, C., Kremer, R. K.

Vibrational properties of NaV2O5 under high pressure studied by Raman spectroscopy. (1999)

Loa, I., Syassen, K., Kremer, R. K.

Structural properties of NaV2O5 under high pressure. (1999)

Loa, I., Syassen, K., Kremer, R. K., Schwarz, U., Hanfland, M.

Pr8Cl7B7: preparation, structure, bonding, properties. (1999)

Mattausch, Hj., Oeckler, O., Vajenine, G. V., Kremer, R. K., Simon, A.

Specific heat of α′-NaV2O5 in magnetic fields up to 16 T. (1999)

Schnelle, W., Grin, Y., Kremer, R. K.

A polarized neutron scattering study of the normal phase in YBa2Cu3O6.95. (1999)

Smith, T. J., Andersen, K. H., Beck, U., Capellmann, H., Kremer, R. K., ...

Kinetic parameters of thin alpha-tungsten films. (1999)

Stolovits, A., Sherman, S., Kremer, R. K.

Spin-spin correlations in the insulating and metallic phases of the Mott system V2O3. (1999)

Taylor, J. W., Smith, T. J., Andersen, K. H., Capellmann, H., Kremer, R. K., Simon, A., ...

Crystal structure and optical spectroscopy of NaV2O5 under pressure. (1999)

Loa, I., Schwarz, U., Hanfland, M., Kremer, R. K., Syassen, K.

The closo-Cluster Triad: B9X9, [B9X9].-, and [B9X9]2- with Tricapped Trigonal Prisms (X = Cl, Br, I). Syntheses, Crystal and Electronic Structures (1999)

Binder, H., Kellner, R., Vaas, K., Hein, M., Baumann, F., Wanner, M., ...

The rare-earth metal carbide halide superconductors RE2C2X2 (RE = Y, La; X = Cl, Br, I) (1999)

Kremer, R. K., Ahn, K., Henn, R. W., Mattausch, H., Schnelle, W., Stolovits, A., ...

Crystal Structure and Optical Spectroscopy of NaV2O5 under Pressure (1999)

Loa, I., Schwarz, U., Hanfland, M., Kremer, R. K., Syassen, K.

Structure and Properties of Nd5Ni6In11 (1999)

Pöttgen, R., Kremer, R. K., Schnelle, W.

Specific heat of α′-NaV2O5 in magnetic fields up to 16 T (1999)

Schnelle, W., Grin, Y., Kremer, R. K.

Spin-spin correlations in the insulating and metallic phases of the Mott system V2O3 (1999)

Taylor, J.W., Smith, T.J., Andersen, K.H., Capellmann, H., Kremer, R.K., Simon, A., ...

This is Restricted Access. It is also available at: http://springerlink.metapress.com/openurl.asp?genre=journal&eissn=1434-6036.

Specific heat, magnetization and C-isotope effect of Y2C2(Br,I)2 superconductors. (1998)

Schnelle, W., Henn, R. W., Gulden, T., Kremer, R. K., Simon, A.

Redetermination of the crystal structure of sodium vanadate, α'-NaV2O5. (1998)

Von Schnering, H. G., Grin, Y., Kaupp, M., Somer, M., Kremer, R. K., Jepsen, O., ...

The absence of local moments in the superconductor YBa2Cu3O6.95. (1998)

Smith, T. J., Anderson, K. H., Beck, U., Capellmann, H., Kremer, R. K., ...

The first observation of dynamical chirality by polarized neutron scattering in the triangular lattice antiferromagnet CsMnBr3. (1998)

Maleyev, S. V., Plakhty, V. P., Smirnov, O. P., Wosnitza, J., Visser, D., Kremer, R. K., ...

NMR analysis of the electronic structure of superconducting yttrium carbide halides. (1998)

Herrling, E., Dormann, E., Henn, R. W., Kremer, R. K., Simon, A.

Neutron diffraction and micro-Raman scattering studies on rare-earth carbide halides. (1998)

Henn, R. W., Strach, T., Kremer, R. K., Simon, A.

Absence of local moments in superconductor YBazCu306.95 (1998)

Smith, T.J., Andersen, K.H., Beck, U., Capellmann, H., Kremer, R.K., Neumann, K-U., ...

This is Restricted Access. It is also available at: http://www.sciencedirect.com/science/journal/03048853.

Crystal structure of CuGeO3 under pressure. (1997)

Bräuninger, S., Schwarz, U., Hanfland, M., Zhou, T., Kremer, R. K., Syassen, K.

Weak ferromagnetism and magnetically modulated microwave absorption at low magnetic fields in 1,3,5-triphenyl-6-oxoverdazyl. (1994)

Kremer, R.K., Kanellakopulos, B., Bele, P., Brunner, H., Neugebauer, F.A.

Chemical Physics Letters, 230(1994) S.255-59

The energy gaps of fullerene C§6§0 and C§7§0 determined from the temperature dependent microwave conductivity. (1993)

Rabenau, T., Simon, A., Kremer, R.K., Sohmen, E.

Zeitschrift fuer Physik B, 90(1993) S.69-72

Die Bestimmung der Energiebandluecke von Fullerene C-60 mittels der Mikrowellenresonator-Stoermethode. (1992)

Rabenau, T., Kremer, R.K., Simon, A., Sohmen, E.

Fruehjahrstagung des Arbeitskreises Festkoerperphysik bei der DPG, gemeinsame Tagung mit der Oesterreichischen Physikalischen Gesellschaft -Fachausschuss Festkoerperphysik-, Nederlandse Natuurkundige...