An atomic mechanism for the boson peak in metallic glasses (2008)
The boson peak in metallic glasses is modeled in terms of local structural shear rearrangements. Using Eshelby's solution of the corresponding elasticity theory problem (J. D. Eshelby, Proc. Roy....
Vibrational instability, two-level systems and Boson peak in glasses (2007)
Parshin, D. A., Gurevich, V. L., Schober, H. R.
We show that the same physical mechanism is fundamental for two seemingly different phenomena such as the formation of two-level systems in glasses and the Boson peak in the reduced density of...
Diffusion in a model metallic glass: heterogeneity and ageing (2005)
We report results of molecular dynamics simulations of a binary Lennard-Jones system at zero pressure in the undercooled liquid and glassy states. We first follow the evolution of diffusivity and...
Diffusion and jump-length distribution in liquid and amorphous Cu$_{33}$Zr$_{67}$ (2005)
Using molecular dynamics simulation, we calculate the distribution of atomic jum ps in Cu$_{33}$Zr$_{67}$ in the liquid and glassy states. In both states the distribution of jump lengths can be...
Vibrations and Relaxations in a Soft Sphere Glass: Boson Peak and Structure Factors (2005)
The dynamics of a soft sphere model glass, studied by molecular dynamics, is investigated. The vibrational density of states divided by $\omega^2$ shows a pronounced boson peak. Its shape is in...
Pressure dependence of the boson peak in glasses (2005)
Gurevich, V. L., Parshin, D. A., Schober, H. R.
This version is available at the following Publisher URL: http://prb.aps.org
Pressure dependence of the Boson peak in glasses (2004)
Gurevich, V. L., Parshin, D. A., Schober, H. R.
The inelastic scattering intensities of glasses and amorphous materials has a maximum at a low frequency, the so called Boson peak. Under applied hydrostatic pressure, $P$, the Boson peak frequency,...
Diffusion and jump-length distribution in liquid and amorphous Cu33Zr67 (2004)
This version is available at the following Publisher URL: http://prb.aps.org
Diffusion in metallic glasses and supercooled melts (2003)
Faupel,F., Frank,W., Macht,M. P., Mehrer,H., Naundorf,V., Rätzke,K., ...
Diffusion in metallic glasses and supercooled melts (2003)
Faupel, F., Frank, W., Macht, M. P., Mehrer, H., Naundorf, V., Rätzke, K., ...
Diffusion in metallic glasses and supercooled melts (2003)
Faupel, F., Frank, W., Mehrer, H., Naundorf, V., Rätzke, K., ...
This version is available at the following Publisher URL: http://rmp.aps.org
Anharmonicity, vibrational instability, and the Boson peak in glasses (2003)
Gurevich, V. L., Parshin, D. A., Schober, H. R.
This version is available at the following Publisher URL: http://prb.aps.org
Anharmonicity, vibrational instability and Boson peak in glasses (2002)
Gurevich, V. L., Parshin, D. A., Schober, H. R.
We show that a {\em vibrational instability} of the spectrum of weakly interacting quasi-local harmonic modes creates the maximum in the inelastic scattering intensity in glasses, the Boson peak. The...
Influence of quench rate and pressure on the glass transition temperature in selenium (2002)
This version is available at the following Publisher URL: http://jcp.aip.org
Pressure dependence of diffusion in simple glasses and supercooled liquids (2002)
This version is available at the following Publisher URL: http://prl.aps.org
Collectivity of motion in undercooled liquids and amorphous solids (2001)
The motion of the structure determining components is highly collective, both in amorphous solids and in undercooled liquids. This has been deduced from experimental low temperature data in the...
Pressure dependence of diffusion in simple glasses and supercooled liquids (2001)
Using molecular dynamics simulation, we have calculated the pressure dependence of the diffusion constant in a binary Lennard-Jones Glass. We observe four temperature regimes. The apparent activation...
Vibrational density of states of selenium through the glass transition (2001)
This version is available at the following Publisher URL: http://jcp.aip.org
Structure and relaxations in liquid and amorphous Selenium (2000)
We report a molecular dynamics simulation of selenium, described by a three-body interaction. The temperatures T_g and T_c and the structural properties are in agreement with experiment. The mean...
Universal behavior of relaxational heterogeneity in glasses and liquids (2000)
Caprion, D., Matsui, J., Schober, H. R.
We report an investigation of the heterogeneity in super-cooled liquids and glasses using the non-Gaussianity parameter. We simulate selenium and a binary Lennard-Jones system by molecular dynamics....
Isotope effect of diffusion in a simple liquid (2000)
This version is available at the following URL: http://pre.aps.org/
Voronoi-Delaunoy analysis of normal modes in a simple model glass (2000)
Luchnikov, V. A., Medvedev, N. N., Naberukhin, Y. I., Schober, H. R.
This version is available at the following URL: http://prb.aps.org/
Structure and relaxation in liquid and amorphous selenium (2000)
This version is available at the following URL: http://prb.aps.org/
Dynamic heterogeneity in glasses and liquids (2000)
Caprion, D., Matsui, J., Schober, H. R.
This version is available at the following URL: http://pra.aps.org
Distribution of fractal dimensions at the Anderson transition (1999)
Parshin, D. A., Schober, H. R.
We investigated numerically the distribution of participation numbers in the 3d Anderson tight-binding model at the localization-delocalization threshold. These numbers in {\em one} disordered system...
Voronoi-Delaunay analysis of normal modes in a simple model glass (1999)
Luchnikov, V. A., Medvedev, N. N., Naberukhin, Yu. I., Schober, H. R.
We combine a conventional harmonic analysis of vibrations in a one-atomic model glass of soft spheres with a Voronoi-Delaunay geometrical analysis of the structure. ``Structure potentials''...
Dynamics of periodic pattern formation (1986)
Schober, H. R., Allroth, E., Schroeder, K., Müller-Krumbhaar, H.
Copyright AIP. This version is available at http://link.aps.org/abstract/PRA/v33/p567
Gitterdynamik von kubischem Lanthan bei Raumtemperatur. (1983)
Nuecker, N., Buchenau, U., Schober, H.R.
Fruehjahrstagung des Arbeitskreises Festkoerperphysik bei der Deutschen Physikalischen Gesellschaft, Freudenstadt, 21.-25.Maerz 1983