Gambardella, Pietro, Stepanow, Sebastian, Dmitriev, Alexandre, Honolka, J., Lingenfelder, Magalí, ...
5 pages, 3 figures.-- Supplementary information (Sample preparation, Suppl. figures S1-S6, tables S1-S3, 17 pages) available at: http://www.nature.com/nmat/journal/vaop/ncurrent/extref/nmat2376-s1.pdf
Lehnert, A., Buluschek, P., Weiss, N., Giesecke, J., Treier, M., Rusponi, S., ...
A surface magneto-optic Kerr effect (MOKE) setup fully integrated in an ultrahigh vacuum chamber is presented. The system has been designed to combine in situ MOKE and scanning tunneling microscopy....
Stabilization of bimolecular islands on ultrathin NaCl films by a vicinal substrate (2009)
Canas-Ventura, M. E., Xiao, W., Ruffieux, P., Rieger, R., Müllen, Klaus, Brune, H., ...
Metal-organic networks as templates for Fe and Co nanostructures. (2009)
Schlickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
Frühjahrstagung DPG, Fachverband Oberflächenphysik, Dresden, 22.-27.März 2009
Surface-confined self-assembly of 2D metal-organic networks. (2009)
Klyatskaya, S., Zoppellaro, G., Schlickum, U., Decker, R., Klappenberger, F., Auwärter, W., ...
Vortr.: Universite Louis Pasteur, Strasbourg, 29.Juni 2009
Kühne, D., Klappenberger, F., Decker, R., Schlickum, U., Brune, H., Klyatskaya, S., ...
Journal of the American Chemical Society, 131(2009) S.3881-83
Magnetic properties of ultrathin FexCo(1-x) films on Pt(111) (2008)
Moulas, G., Lehnert, A., Rusponi, S., Zabloudil, J., Etz, C., Ouazi, S., ...
14 pages, 14 figures.-- PACS nrs.: 75.70.Ak; 75.30.Gw; 73.20.At.
The role of magnetic anisotropy in the Kondo effect (2008)
Otte, A.F., Ternes, M., Von Bergmann, K., Loth, S., Brune, H., Lutz, C.P., ...
High magnetic moments and anisotropies for FexCo1 - x monolayers on Pt(111) (2008)
Moulas, G., Lehnert, A., Rusponi, S., Zabloudil, J., Etz, C., Ouazi, S., ...
Using metal-organic templates to steer the growth of Fe and Co nanoclusters (2008)
Decker, R., Schlickum, U., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
Chiral kagome lattice from simple ditopic molecular bricks (2008)
Schlickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Auwarter, W., ...
Self-assembly techniques allow for the fabrication of highly organized architectures with atomic-level precision. Here, we report on molecular-level scanning tunneling microscopy observations...
Klappenberger, F., Canas-Ventura, M. E., Clair, S., Pons, S., Schlickum, U., Qu, Z. R., ...
We report on a multi-technique investigation of the supramolecular organisation of N,N-diphenyl oxalic amide under differently dimensioned environments, namely three-dimensional (3D) in the bulk...
Role of hydrogen in giant spin polarization observed on magnetic nanostructures (2008)
Hofer, W. A., Palotas, K., Rusponi, S., Cren, T., Brune, H.
We demonstrate that the giant spin contrast observed by scanning tunneling microscopy for double-layer Coislands on Pt(111) is caused by adsorbates at the apex of the Cr-coated W tip. The most likely...
Chiral kagome lattice from simple ditopic molecular bricks. (2008)
Schlickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Auwärter, W., ...
Journal of the American Chemical Society, 130(2008) S.11778-782
Klappenberger, F., Canas-Ventura, M.E., Clair, S., Pons, S., Schlickum, U., Qu, Z.R., ...
ChemPhysChem, 9(2008) S.2522-30
Using metal-organic templates to steer the growth of Fe and Co nanoclusters. (2008)
Decker, R., Schlickum, U., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
Applied Physics Letters, 93(2008) S.243102/1-3
Metal-organic honeycomb nanomeshes with tunable cavity size (2007)
Schickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
We present a systematic study of metal−organic honeycomb lattices assembled from simple ditopic molecular bricks and Co atoms on Ag(111). This approach enables us to fabricate size- and...
Metal-organic honeycomb nanomeshes with tunable cavity size (2007)
Schickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
We present a systematic study of metal-organic honeycomb lattices assembled from simple ditopic molecular bricks and Co atoms on Ag(111). This approach enables us to fabricate size- and...
Gambardella, Pietro, Claude, L., Rusponi, S., Franke, K. J., Brune, H., Raabe, J., ...
7 pages, 7 figures.-- PACS nrs.: 75.50.Pp; 75.70.-i; 78.70.Dm; 75.20.Hr.
Self-assembly of periodic bicomponent wires and ribbons (2007)
Canas-Ventura, M. E., Xiao, W., Wasserfallen, D., Müllen, Klaus, Brune, H., Barth, J. V., ...
Surface characterization of MnxGe1-x and CryMnxGe1-x-y dilute magnetic semiconductors (2007)
Gambardella, P., Claude, L., Rusponi, S., Franke, K. J., Brune, H., Raabe, J., ...
We have used x-ray photoemission electron microscopy (XPEEM) and x-ray absorption spectroscopy (XAS) to characterize MnxGe1-x and CryMnxGe1-x-y films grown by molecular beam epitaxy. The surface...
Metal-organic honeycomb nanomeshes with tunable cavity size (2007)
Schickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
We present a systematic study of metal-organic honeycomb lattices assembled from simple ditopic molecular bricks and Co atoms on Ag(111). This approach enables us to fabricate size- and...
Conformational adaptation in supramolecular assembly on surfaces (2007)
Klappenberger, F., Canas-Ventura, M. E., Clair, S., Pons, S., Schlickum, U., Qu, Z. R., ...
Self-assembly of periodic bicomponent wires and ribbons (2007)
Canas-Ventura, M. E., Xiao, W., Wasserfallen, D., Mullen, K., Brune, H., Barth, J. V., ...
Stepanow, S., Lin, N., Payer, D., Schlickum, U., Klappenberger, F., Zoppellaro, G., ...
Angewandte Chemie International Edition, 46(2007) S.710-13
Self-assembly and coordination chemistry under surface-confinement. (2007)
Klyatskaya, S., Zoppellaro, G., Ruben, M., Schlickum, U., Decker, R., Klappenberger, F., ...
Internat.Karlsruhe Nanoscience Workshop 'Metal-rich Compounds', Karlsruhe, October 8-10, 2007
Conformational Adaptation in Supramolecular Assembly on Surfaces. (2007)
Klappenberger, F., Canas-Ventura, M.A., Clair, S., Pons, S., Schlickum, U., Qu, Z.R., ...
ChemPhysChem, 8(2007) S.1782-86
Metal-organic honeycomb nanomeshes with tunable cavity size. (2007)
Schlickum, U., Decker, R., Klappenberger, F., Zoppellaro, G., Klyatskaya, S., Ruben, M., ...
Nano Letters, 7(2007) S.3813-17
Structure and magnetism of atomically thin Fe layers on flat and vicinal Pt surfaces (2006)
Repetto, D., Lee, T. Y., Rusponi, S., Honolka, J., Kuhnke, K., Sessi, V., ...
8 pages, 11 figures.-- PACS nrs.: 75.30.Gw; 75.30.Kz; 75.50.Bb; 75.70.Ak.
Equilibrium island-size distribution in one dimension (2006)
Gambardella, Pietro, Brune, H., Kern, Klaus, Marchenko, V. I.
4 pages, 2 figures.-- PACS nrs.: 81.16.Dn; 82.60.Nh; 68.55.Ac; 68.43.De.
Magnetism of Fe clusters and islands on Pt surfaces (2006)
Repetto, D., Honolka, J., Rusponi, S., Brune, H., Enders, A., Kern, K.
Clusters and islands of Fe atoms have been prepared by noble gas buffer layer assisted growth as well as by standard molecular beam epitaxy on Pt substrates. Xe buffer layers have been utilized to...
Clair, S., Pons, S., Fabris, S., Baroni, S., Brune, H., Kern, K., ...
We report scanning tunneling microscopy observations on the formation of 2D Co-based coordination compounds on the reconstructed Au(111) surface. Preorganized arrays of Co bilayer islands are shown...
Structure and magnetism of atomically thin Fe layers on flat and vicinal Pt surfaces (2006)
Repetto, D., Lee, T. Y., Rusponi, S., Honolka, J., Kuhnke, K., Sessi, V., ...
Nanotechnology: Assessment and Perspectives (2006)
Brune, H., Ernst, H., Grunwald, A., Grünwald, W., Hofmann, H., Janich, P., ...
Cañas-Ventura, M. E., Klappenberger, F., Clair, S., Pons, S., Kern, K., Brune, H., ...
The adsorption of terephthalic acid [C6H4(COOH)(2), TPA] on a Pd(111) surface has been investigated by means of scanning tunneling microscopy (STM), x-ray photoelectron spectroscopy, and near-edge...
Orbital selective overlayer-substrate hybridization in a Pb monolayer on Ag(111) (2006)
Ast, C. R., Pacilé, D., Papagno, M., Gloor, T., Mila, F., Fedrigo, S., ...
The electronic structure of a Pb overlayer on Ag(111) has been studied by angle-resolved photoemission spectroscopy. We identify three p bands. While the p(xy) bands are sharp and closely resemble...
Structure and magnetism of atomically thin Fe layers on flat and vicinal Pt surfaces (2006)
Repetto, D., Lee, T. Y., Rusponi, S., Honolka, J., Kuhnke, K., Sessi, V., ...
Ultrathin Fe films on Pt substrates have been investigated under ultrahigh vacuum conditions by scanning tunneling microscopy, low energy electron diffraction, magneto-optical Kerr effect, x-ray...
Magnetism of Fe clusters and islands on Pt surfaces (2006)
Repetto, D., Honolka, J., Rusponi, S., Brune, H., Enders, A., Kern, K.
Clusters and islands of Fe atoms have been prepared by noble gas buffer layer assisted growth as well as by standard molecular beam epitaxy on Pt substrates. Xe buffer layers have been utilized to...
Nucleation of ordered Fe islands on Al2O3/Ni3Al(111) (2006)
Lehnert, A., Krupski, A., Degen, S., Franke, K., Decker, R., Rusponi, S., ...
Scanning tunneling microscopy (STM) has been used to investigate the nucleation and stability of iron clusters on the Al2O3/Ni3Al (111) surface as a function of coverage and annealing temperature. We...
Equilibrium island-size distribution in one dimension (2006)
Gambardella, P., Brune, H., Kern, K., Marchenko, V. I.
We derive an analytical expression for the size distribution of monoatomic wires in the framework of a one-dimensional lattice gas model at thermodynamic equilibrium. The theoretical results are...
Clair, S., Pons, S., Fabris, S., Baroni, S., Brune, H., Kern, K., ...
We report scanning tunneling microscopy observations on the formation of 2D Co-based coordination compounds on the reconstructed Au(111) surface. Preorganized arrays of Co bilayer islands are shown...
Canas-Ventura, M. E., Klappenberger, F., Clair, S., Pons, S., Kern, K., Brune, H., ...
The adsorption of terephthalic acid [C6H4(COOH)(2), TPA] on a Pd(111) surface has been investigated by means of scanning tunneling microscopy (STM), x-ray photoelectron spectroscopy, and near-edge...
Orbital selective overlayer-substrate hybridization in a Pb monolayer on Ag(111) (2006)
Ast, C. R., Pacile, D., Papagno, M., Gloor, T., Mila, F., Fedrigo, S., ...
The electronic structure of a Pb overlayer on Ag(111) has been studied by angle-resolved photoemission spectroscopy. We identify three p bands. While the p(xy) bands are sharp and closely resemble...
Nanotechnology: Assessment and Perspectives (2006)
Schmid, G., Brune, H., Ernst, H., Grünwald, W., Grunwald, A., Hofmann, H., ...
Nanotechnology : assessment and perspectives. (2006)
Brune, H., Ernst, H., Grunwald, A., Grünwald, W., Hofmann, H., Krug, H., ...
Berlin [u.a.] : Springer, 2006
Paramagnetic Mn impurities on Ge and GaAs surfaces (2005)
Gambardella, P., Brune, H., Dhesi, S. S., Bencok, P., Krishnakumar, S. R., Gardonio, S., ...
Individual Mn impurities deposited on Ge(100), Ge(111), and GaAs(110) substrates present magnetic moments significantly larger compared to the average Mn magnetization in bulklike Ga1-xMnxAs and...
Weiss, N., Cren, T., Epple, M., Rusponi, S., Baudot, G., Rohart, S., ...
We report on the magnetic properties of two-dimensional Co nanoparticles arranged in macroscopically phase-coherent superlattices created by self-assembly on Au(788). Our particles have a density of...
Magnetic anisotropy from single atoms to large monodomain islands of Co/]Pt(111) (2005)
Gambardella, P., Rusponi, S., Cren, T., Weiss, N., Brune, H.
By studying the magnetic behavior of self-assembled Co islands on a single-crystal metal surface, Pt(111), we show how the magnetic anisotropy evolves from isolated atoms to monolayer islands and...
Radial elasticity of multiwalled carbon nanotubes (2005)
Palaci, I., Fedrigo, S., Brune, H., Klinke, C., Chen, M., Riedo, E.
We report an experimental and a theoretical study of the radial elasticity of multiwalled carbon nanotubes as a function of external radius. We use atomic force microscopy and apply small indentation...
Rusponi, S., Weiss, N., Cren, T., Epple, M., Brune, H.
We employ variable-temperature spin-polarized scanning tunneling microscopy in constant current mode to read the magnetic state of monodomain cobalt nanoparticles on Pt(111). In order to avoid stray...
X-ray ferromagnetic resonance spectroscopy (2005)
Boero, G., Rusponi, S., Bencok, P., Popovic, R. S., Brune, H., Gambardella, P.
We present a method to measure continuous-wave ferromagnetic resonance (FMR) spectra based on the core-level absorption of circularly polarized x rays. The technique is demonstrated by using a...
Picaud, F., Ramseyer, C., Girardet, C., Brune, H., Kern, K.
Based on kinetic Monte Carlo simulations, we show that modulated wires and island gratings can be formed at vicinal surfaces. The modulation (grating) wavelength along the steps can be tailored by...
Petit, C., Rusponi, S., Brune, H.
Magneto-optical Kerr effect, is used to investigate the magnetization of film made of uncoalesced cobalt and cobalt-platinum nanocrystals. For the pure cobalt nanocrystals, different film...
Oxidation induced enhanced magnetic susceptibility of Co islands on Pt(111) (2004)
Cren, T., Rusponi, S., Weiss, N., Epple, M., Brune, H.
We have studied the evolution of the magnetic properties of monolayer-high cobalt islands on a Pt(111) surface as function of their exposure to oxygen. We observe a sequential quenching of magnetic...
Longwitz, S. R., Schnadt, J., Vestergaard, E. K., Vang, R. T., Laegsgaard, E., Stensgaard, I., ...
High-pressure scanning tunneling microscopy was used to study the room-temperature adsorption of CO on a Pt(111) single-crystal surface in equilibrium with the gas phase. The coverage was found to...
The 2/3 power law dependence of capillary force on normal load in nanoscopic friction (2004)
Riedo, E., Pallaci, I., Boragno, C., Brune, H.
During the sliding of an atomic force microscope (AFM) tip on a rough hydrophilic surface, water capillary bridges form between the tip and the asperities of the sample surface. These water bridges...
Picaud, F., Ramseyer, C., Girardet, C., Brune, H., Kern, K.
Based on kinetic Monte Carlo simulations, we show that modulated wires and island gratings can be formed at vicinal surfaces. The modulation (grating) wavelength along the steps can be tailored by...
Clair, S., Pons, S., Seitsonen, A. P., Brune, H., Kern, K., Barth, J. V.
The adsorption and ordering of the molecule terephthalic acid (TPA), 1,4-benzene-dicarboxylic acid C6H4-(COOH)(2), on the reconstructed Au(111) surface has been studied in situ in ultrahigh vacuum by...
Wessendorf, M., Wiemann, C., Bauer, M., Aeschlimann, M., Schneider, M. A., Brune, H., ...
We investigated the electronic structure of epitaxially grown silver films on Cu(111) with and without adsorption of cesium by means of scanning tunneling spectroscopy and two-photon photoemission....
Hofer, W. A., Garcia-Lekue, A., Brune, H.
Due to the importance of scanning tunneling microscopy for atomic scale research the anomalously high corrugation values on close packed metal surfaces have been the subject of debate and extensive...
Giant magnetic anisotropy of single cobalt atoms and nanoparticles (2003)
Gambardella, P., Rusponi, S., Veronese, M., Dhesi, S. S., Grazioli, C., Dallmeyer, A., ...
Giant magnetic anisotropy of single cobalt atoms and nanoparticles (2003)
Gambardella, P., Rusponi, S., Veronese, M., Dhesi, S. S., Grazioli, C., Dallmeyer, A., ...
The isotropic magnetic moment of a free atom is shown to develop giant magnetic anisotropy energy due to symmetry reduction at an atomically ordered surface. Single cobalt atoms deposited onto...
Rusponi, S., Cren, T., Weiss, N., Epple, M., Buluschek, P., Claude, L., ...
The original magnetic properties of nanometre-sized particles are due to the distinct contributions of volume, surface and step atoms. To disentangle these contributions is an ongoing challenge of...
Interaction potential and hopping dynamics governing sliding friction (2003)
Riedo, E., Gnecco, E., Bennewitz, R., Meyer, E., Brune, H.
The friction force on a nanometer-sized tip sliding on a surface is related to the thermally activated hopping of the contact atoms on an effective atomic interaction potential. A general analytical...
Young modulus dependence of nanoscopic friction coefficient in hard coatings (2003)
We present an atomic force microscope study of nanoscopic sliding friction on diamond, diamond-like carbon, and on three CrN thin films with varying hardness obtained by different growth...
Venables, J. A., Bennett, P. A., Brune, H., Drucker, J., Harding, J. H.
Nucleation and growth models are well developed for nucleation on homogeneous substrates, and they can typically be described-in terms of three energy parameters. Nucleation on substrates containing...
Surface diffusion - Shifting strings (2003)
Many atomic diffusion processes occur at rates that are too fast to observe experimentally. Using video scanning tunnelling microscopy, researchers are now able to observe the individual steps...
Imaging of electron potential landscapes on Au(111) (2002)
Bürgi, L., Brune, H., Kern, K.
The Hohenberg-Kohn theorem states that the ground state electron density completely determines the external potential acting on an electron system. Inspired by this fundamental theorem, we developed...
Barth, J. V., Weckesser, J., Trimarchi, G., Vladimirova, M., De Vita, A., Cai, C. Z., ...
We present investigations on noncovalent bonding and supramolecular self-assembly of two related molecular building blocks at a noble metal surface: 4-[trans-2-(pyrid-4-yl- vinyl)]benzoic acid (PVBA)...
Two-dimensional electron gas at noble-metal surfaces (2002)
Bürgi, L., Knorr, N., Brune, H., Schneider, M. A., Kern, K.
The electrons of the surface states on the (I 11) surfaces of the noble metals An, Ag, and Cu form a quasi-two-dimensional (2D) free electron gas which is confined to the first few atomic layers at...
Use of scanning capacitance microscopy for controlling wafer processing (2002)
Jeandupeux, O., Marsico, V., Acovic, A., Fazan, P., Brune, H., Kern, K.
Scanning capacitance microscopy and electrostatic force microscopy have been used to characterize commercial semiconductor devices at various stages of the fabrication process. These methods,...
Long-range adsorbate interactions mediated by a two-dimensional electron gas (2002)
Knorr, N., Brune, H., Epple, M., Hirstein, A., Schneider, M. A., Kern, K.
We report on long-range interactions between adsorbates on metal surfaces with a surface state. A comparison of three adsorbate/substrate systems [Cu/Cu(111), Co/Cu(111), and Co/Ag(111)] suggests the...
Use of scanning capacitance microscopy for controlling wafer processing (2002)
Jeandupeux, O., Marsico, V., Acovic, A., Fazan, P., Brune, H., Kern, K.
Scanning capacitance microscopy and electrostatic force microscopy have been used to characterize commercial semiconductor devices at various stages of the fabrication process. These methods,...
Kinetics of capillary condensation in nanoscopic sliding friction (2002)
Riedo, E., Levy, F., Brune, H.
The velocity and humidity dependence of nanoscopic sliding friction has been studied on CrN and diamondlike carbon surfaces with an atomic force microscope. The surface wettability is found to be...
Capture numbers in the presence of repulsive adsorbate interactions (2002)
Capture numbers are used in models of nucleation and growth on surfaces, and have been widely applied to predict nucleation densities and other quantities via rate equations. In conventional...
Long-range adsorbate interactions mediated by a two-dimensional electron gas (2002)
Knorr, N., Brune, H., Epple, M., Hirstein, A., Schneider, M. A., Kern, K.
We report on long-range interactions between adsorbates on metal surfaces with a surface state. A comparison of three adsorbate/substrate systems [Cu/Cu(111), Co/Cu(111), and Co/Ag(111)] suggests the...
Barth, J. V., Weckesser, J., Trimarchi, G., Vladimirova, M., De Vita, A., Cai, C. Z., ...
We present investigations on noncovalent bonding and supramolecular self-assembly of two related molecular building blocks at a noble metal surface: 4-[trans-2-(pyrid-4-yl-vinyl)]benzoic acid (PVBA)...
Two-dimensional electron gas at noble-metal surfaces (2002)
Burgi, L., Knorr, N., Brune, H., Schneider, M. A., Kern, K.
The electrons of the surface states on the (I 11) surfaces of the noble metals An, Ag, and Cu form a quasi-two-dimensional (2D) free electron gas which is confined to the first few atomic layers at...
Imaging of electron potential landscapes on Au(111) (2002)
Burgi, L., Brune, H., Kern, K.
The Hohenberg-Kohn theorem states that the ground state electron density completely determines the external potential acting on an electron system. Inspired by this fundamental theorem, we developed...
Riedo, E., Chevrier, J., Comin, F., Brune, H.
The tribological behavior of carbon based thin films is strongly influenced by their chemical composition, polycrystalline structure and surface morphology. We present friction measurements on laser...
Abbet, S., Riedo, E., Brune, H., Heiz, U., Ferrari, A. M., Giordano, L., ...
CO adsorption on Pd atoms deposited on MgO(100) thin films has been studied by means of thermal desorption (TDS) and Fourier transform infrared (FTIR) spectroscopies. CO desorbs from the adsorbed Pd...
Nucleation and growth of supported clusters at defect sites: Pd/MgO(001) (2000)
Haas, G., Menck, A., Brune, H., Barth, J. V., Venables, J. A., Kern, K.
Dynamics of surface diffusion in the weak corrugation regime (2000)
Barth, J.V., Brune, H., Fischer, B., Weckesser, J., Kern, K.
One-dimensional metal chains on Pt vicinal surfaces (2000)
Gambardella, P., Blanc, M., Brune, H., Kuhnke, K., Kern, K.
High-density arrays (5 x 10(6) cm(-1)) of parallel nanowires have been grown using the vicinal Pt(997) surface as a template. Single monatomic rows of Ag and Cu can be deposited with subrow...
Nucleation and growth of supported clusters at defect sites: Pd/MgO(001) (2000)
Haas, G., Menck, A., Brune, H., Barth, J. V., Venables, J. A., Kern, K.
Nucleation and growth of Pd on cleaved MgO(001) surfaces were studied by variable-temperature atomic force microscopy in the temperature range 200-800 K. Constant island densities (similar to...
Nature, strength, and consequences of indirect adsorbate interactions on metals (2000)
Bogicevic, A., Ovesson, S., Hyldgaard, P., Lundqvist, B. I., Brune, H., Jennison, D. R.
Atoms and molecules adsorbed on metals affect each other indirectly even over considerable distances. Via systematic density-functional calculations, we establish the nature and strength of such...
Dynamics of surface migration in the weak corrugation regime (2000)
Barth, J. V., Brune, H., Fischer, B., Weckesser, J., Kern, K.
We report a systematic study for metal-on-metal surface migration in the weak corrugation regime, i.e., with migration barriers falling below approximate to 100 meV. The migration characteristics are...
Noble metal surface states: deviations from parabolic dispersion (2000)
Burgi, L., Petersen, L., Brune, H., Kern, K.
Dispersion relations of the s-p derived surface state on (111) surfaces of silver and copper have been measured using low-temperature scanning tunneling microscopy and spectroscopy. For silver as...
Quantum coherence and lifetimes of surface-state electrons (2000)
Burgi, L., Brune, H., Jeandupeux, O., Kern, K.
We discuss a novel approach to measure the electron phase-relaxation length and femtosecond lifetimes at surfaces. It relies on the study of the spatial decay of quantum interference patterns in the...
Measuring surface diffusion from nucleation island densities. (1999)
Brune, H., Bales, G. S., Jacobsen, J., Boragno, C., Kern, K.
Thermal damping of quantum interference patterns of surface-state electrons. (1999)
Jeandupeux, O., Bürgi, L., Hirstein, A., Brune, H., Kern, K.
Hamilton, J. C., Stumpf, R., Bromann, K., Giovannini, M., Kern, K., Brune, H.
Submonolayer films of AE on Pt(111) exhibit parallel partial dislocations separated by narrow hcp domains and much wider fcc domains, the large difference in width being atypical of strained metal...
Nucleation kinetics on inhomogeneous substrates: Al/Au(111) (1999)
Fischer, B., Brune, H., Barth, J. V., Fricke, A., Kern, K.
We report a quantitative atomic scale study of nucleation kinetics on an inhomogeneous substrate. Our model system, Al/Au(111)-(root 3 x 22), reveals a distinct nucleation transition due to the...
Measuring surface diffusion from nucleation island densities (1999)
Brune, H., Bales, G. S., Jacobsen, J., Boragno, C., Kern, K.
We present a critical view of the analysis of experimental island densities acquired as a function of temperature in terms of barriers and prefactors for tracer diffusion at surfaces. We investigate...
Self-organized growth of cluster arrays (1999)
Bromann, K., Giovannini, M., Brune, H., Kern, K.
We present a novel method for the fabrication of well-ordered, two-dimensional nanocluster arrays. The method is based on the confined nucleation of adatoms within the superstructure cells of...
Thermal damping of quantum interference patterns of surface-state electrons (1999)
Jeandupeux, O., Burgi, L., Hirstein, A., Brune, H., Kern, K.
The temperature-dependent damping of quantum-mechanical interference patterns from surface-state electrons scattering off steps on Ag(111) and Cu(111) has been studied using scanning tunneling...
Probing hot-electron dynamics at surfaces with a cold scanning tunneling microscope (1999)
Burgi, L., Jeandupeux, O., Brune, H., Kern, K.
We report on a novel approach to measure the phase relaxation length and femtosecond lifetime of hot quasiparticles on metal surfaces. A 4 K scanning tunneling microscope has been used to study the...
Strain relief via island ramification in submonolayer heteroepitaxy (1998)
Muller, B., Nedelmann, L. P., Fischer, B., Brune, H., Barth, J. V., Kern, K., ...
The mechanisms of strain relief in submonolayer heteroepitaxy of Cu/Ni(100) are studied using variable temperature scanning tunneling microscopy and high resolution low energy electron diffraction....
Island shape transition in heteroepitaxial metal growth on square lattices (1998)
Muller, B., Nedelmann, L., Fischer, B., Brune, H., Barth, J. V., Kern, K.
A novel mechanism for ramified island growth in the initial stages of metal heteroepitaxy is reported. Scanning tunneling microscopy measurements reveal that copper islands on Ni(100), as they grow...
Self-organized growth of nanostructure arrays on strain-relief patterns (1998)
Brune, H., Giovannini, M., Bromann, K., Kern, K.
The physical and chemical properties of low-dimensional structures depend on their size and shape, and can be very different from those of bulk matter. If such structures have at least one dimension...
Microscopic view of epitaxial metal growth: nucleation and aggregation (1998)
Thin films are often grown away from thermodynamic equilibrium and their morphology becomes determined by kinetics. The final structure of the epitaxial film is decided in the very early stage of...
Self-assembly at metal surfaces (1998)
Barth, J. V., Brune, H., Zambelli, T., Kern, K.
The recent development of temperature controlled scanning tunneling microscopy opened the door to a fascinating new world on the nanometer scale. The atomic scale information obtained provides...
Confinement of surface state electrons in Fabry-Perot resonators (1998)
Burgi, L., Jeandupeux, O., Hirstein, A., Brune, H., Kern, K.
Ag(111) surface state electrons have been confined in symmetric and asymmetric Fabry-Perot resonators formed by two atomically parallel step edges. The local density of states in the resonators has...
Hard and soft landing of mass selected Ag clusters on Pt(111) (1997)
Bromann, K., Brune, H., Félix, C., Harbich, W., Monot, R., Buttet, J., ...
Mass selected Ag/sub n/ clusters (n=1,7,19) from a secondary ion source have been deposited onto a Pt(111) substrate at low temperature. The surface and resulting cluster morphology have subsequently...
Strain mediated two-dimensional growth kinetics in metal heteroepitaxy: Ag/Pt(1111) (1997)
Roder, H., Bromann, K., Brune, H., Kern, K.
We have investigated the influence of strain on the morphology in metal heteroepitaxy at temperatures where growth is dominated by kinetics. Whereas Ag(111) homoepitaxy is three dimensional below 400...
Nucleation and growth of Cu/Ni(100): A variable temperature STM study (1997)
Muller, B., Nedelmann, L., Fischer, B., Brune, H., Kern, K.
A detailed study of the nucleation and growth of Cu on Ni(100) as a function of substrate temperature and deposition rate by variable temperature STM is reported. By the quantitative analysis of the...
Submonolayer nucleation and growth of copper on Ni(100) (1997)
Muller, B., Nedelmann, L., Fischer, B., Brune, H., Kern, K.
Island densities and island sizes can be varied or even tailored by choice of external parameters in molecular beam epitaxy, i.e.: by the choice of substrate temperature. deposition rate, and...
Surface diffusion in metal epitaxy - Strain effects (1997)
Brune, H., Bromann, K., Kern, K.
A method is presented to measure both the barriers for intra-and interlayer diffusion for an epitaxial system with great accuracy. It is based upon the application of mean-field nucleation theory to...
Pseudomorphic growth induced by chemical adatom potential (1997)
Bromann, K., Brune, H., Giovannini, M., Kern, K.
The transformation from pseudomorphic to dislocated and back to pseudomorphic growth with increasing coverage is reported for molecular beam epitaxy of Ag on Pt(111). Below a critical size of 200...
Hard and soft landing of mass selected Ag clusters on Pt(111) (1997)
Bromann, K., Brune, H., Felix, C., Harbich, W., Monot, R., Buttet, J., ...
Mass selected Ag-n clusters (n = 1, 7, 19) from a secondary ion source have been deposited onto a Pt(111) substrate at low temperature. The surface and resulting cluster morphology have subsequently...
Controlled deposition of size-selected silver nanoclusters (1996)
Bromann, K., Félix, C., Brune, H., Harbich, W., Monot, R., Buttet, J., ...
Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on...
Design of a ''beetle-type'' atomic force microscope using the beam deflection technique (1996)
Gasser, B., Menck, A., Brune, H., Kern, K.
In the present article we describe a new setup for an atomic force microscope in the beetle-type geometry. The microscope consists of a compact head standing on three piezo legs with a fourth central...
Schuster, R., Roder, H., Bromann, K., Brune, H., Kern, K.
Upon annealing above 620 K, submonolayers of Ag deposited on Pt(111) are known to mix into the first surface layer. Thereby the individual Ag atoms reduce the strain fields caused by the lattice...
Anisotropic corner diffusion as origin for dendritic growth on hexagonal substrates (1996)
Brune, H., Roder, H., Bromann, K., Kern, K., Jacobsen, J., Stoltze, P., ...
Ag aggregation on Ag(111), Pt(111), and 1 ML Ag pseudomorphically grown on Pt(111), has been studied with variable temperature STM. These systems all have in common that dendritic patterns with...
Fractal and dendritic growth of surface aggregates (1996)
Brune, H., Bromann, K., Kern, K., Jacobsen, J., Stoltze, P., Jacobsen, K., ...
Controlled deposition of size-selected silver nanoclusters (1996)
Bromann, K., Felix, C., Brune, H., Harbich, W., Monot, R., Buttet, J., ...
Variable-temperature scanning tunneling microscopy was used to study the effect of kinetic cluster energy and rare-gas buffer layers on the deposition process of size-selected silver nanoclusters on...
Formation of 2D sulfide phases on Al(111): an STM Study (1995)
Wiederholt, T., Brune, H., Wintterlin, J., Behm, R.J., Ertl, G.
Stability of Disk and Stripe Patterns of Nanostructures at Surfaces (1995)
Zeppenfeld, P., Krzyzowski, M. A., Romainczyk, C., David, R., Comsa, G., Roder, H., ...
The ordering of two-dimensional Ag islands embedded in the Pt(111) surface layer has been investigated using He-atom scattering and scanning tunneling microscopy. At lower Ag coverage the embedded...
Aggregation of Fractal and Dendritic Ag Clusters on a Pt(111) Surface (1995)
Brune, H., Roder, H., Romainczyk, C., Boragno, C., Kern, K.
We have used variable-temperature scanning tunneling microscopy to study the aggregation of two-dimensional Ag clusters on Pt(111). A transition from randomly ramified to dendritic fractal growth is...
Kinetic Processes in Metal Epitaxy Studied with Variable-Temperature Stm - Ag/Pt(111) (1995)
Brune, H., Roder, H., Bromann, K., Kern, K.
Variable-temperature scanning tunneling microscopy has been applied to study kinetic processes involved in epitaxial growth. This paper concentrates on nucleation and aggregation of submonolayer Ag...
Effect of Strain on Surface-Diffusion and Nucleation (1995)
Brune, H., Bromann, K., Roder, H., Kern, K., Jacobsen, J., Stoltze, P., ...
The influence of strain on diffusion and nucleation has been studied by means of scanning tunneling microscopy and effective-medium theory for Ag self-diffusion on strained and unstrained (111)...
Interlayer Mass-Transport in Homoepitaxial and Heteroepitaxial Metal Growth (1995)
Bromann, K., Brune, H., Roder, H., Kern, K.
We describe a general method for the quantitative determination of the interlayer mass transport in epitaxial growth. Through measurement of the nucleation rate on top of islands as a function of...
Mechanism of the Transition from Fractal to Dendritic Growth of Surface Aggregates (1994)
Brune, H., Romainczyk, C., Roder, H., Kern, K.
THE similarity of many patterns formed in non-equilibrium growth processes in physics, chemistry and biology is conspicuous, and many attempts have been made to discover common mechanisms underlying...
Strain Relief at Hexagonal-Close-Packed Interfaces (1994)
Brune, H., Roder, H., Boragno, C., Kern, K.
The mechanism of strain relief for compressively stressed Ag layers epitaxially grown on Pt(111) is studied by scanning tunneling microscopy. The strain in the compressed commensurate (1X1) Ag...
Microscopic View of Nucleation on Surfaces (1994)
Brune, H., Roder, H., Boragno, C., Kern, K.
Nucleation has been studied on atomic scale for Ag deposition on a Pt(111) surface at low temperature (50-120 K) by means of variable-temperature scanning tunneling microscopy. From island density...
Monolayer-Confined Mixing at the Ag-Pt(111) Interface (1993)
Roder, H., Schuster, R., Brune, H., Kern, K.
The present tunneling microscopy study reveals that the growth of silver on Pt(111) at substrate temperatures above 620 K results in the formation of a two-dimensional alloy consisting of Ag clusters...
Interaction of oxygen with Al(111) studied by scanning tunneling microscopy (1993)
Brune, H., Wintterlin, J., Trost, J., Ertl, G., Wiechers, J., Behm, R.J.
Roder, H., Hahn, E., Brune, H., Bucher, J. P., Kern, K.
THE formation of nanometre-scale surface structures by atomic manipulation with the scanning tunneling microscope has opened up opportunities for creating new metastable states of matter atom by...
Changing Morphology of Metallic Monolayers Via Temperature-Controlled Heteroepitaxial Growth (1993)
Roder, H., Brune, H., Bucher, J. P., Kern, K.
Variable temperature scanning tunneling microscopy at substrate temperatures between 25 and 550 K reveals a transition from diffusion limited aggregation to thermodynamic equilibrium in the...
Jacob, J., Brune, H., Grimmer, G., Heinrich, U., Mohtashamipur, E., Norpoth, K., ...
Summarizing the data it may be concluded that high percentages (with up to 70 %) of the PAH material administered can be found in the excretion pruducts in case of oral and intratracheal...
Jacob, J., Brune, H., Gettbarn, G., Mohtashamipur, E., Norpoth, K., Wenzel-Hartung, R., ...
The urinary and faecal excretion of pyrene and 1-hydroxypyrene after oral (53,4 %), intraperitoneal (3,1 %), intratracheal (30-37 %) and intrapulmonary application (0,003 %) to rats has been...
Atomic-resolution imaging of close-packed metal surfaces by scanning tunneling microscopy (1989)
Wintterlin, J., Wiechers, J., Brune, H., Gritsch, T., Höfer, H., Behm, R.J.
Grimmer, G., Brune, H., Dettbarn, G., Jacob, J., Mohtashamipur, E., Norpoth, K., ...
The urinary and faecal excretion of chrysene and its phenolic metabolites after oral, intraperitoneal, intratracheal, and intrapulmonary administration to rats have been studied by means of gas...
Grimmer, G., Brune, H., Deutsch-Wenzel, R., Dettbarn, G., Jacob, J., ...
Diesel exhaust condensate was seperated by a liquid-liquid distribution into a hydrophilic ( I; about 25 per cent by weight of the total condensate) and a hydrophobic part ( II; about 75 per...
Evaluation of environmental carcinogens by carcinogen-specific test systems (1986)
Grimmer, G., Abel, U., Brune, H., Deutsch-Wenzel, R., Emura, M., Heinrich, U., ...
Ahland, E., Borneff, J., Brune, H., Grimmer, G., Habs, M., Hermann, P., ...
Kondensierter Rauch aus kohlebeheizten Zimmeröfen und Abgas von Kraftfahrzeugen (mit Ottomotoren) erzeugen auf der Rückenhaut von CFLP-Mäusen dosisabhängig Karzinome. Durch einen Vergleich der...