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Coulomb Glass (coulomb + glass)

Distribution by Scientific Domains
Physics and Astronomy100%

Selected Abstracts

Simulation of the Coulomb gap evolution in the Coulomb glass

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 3 2008
J. Matulewski
Abstract Time dependent relaxation in the Coulomb glass from the random distribution of electrons via localized states towards the distribution prescribed by the long-range Coulomb interactions is studied by computer simulations. The time evolution of the single particle density of states is followed in course of the relaxation. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Disorder dependence of phase transitions in a Coulomb glass

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue 1 2004
Michael H. Overlin
Abstract We have performed a Monte Carlo study of a three dimensional system of classical electrons with Coulomb interactions at half filling. We systematically increase the positional disorder by starting from a completely ordered system and gradually transitioning to a Coulomb glass. The phase transition as a function of temperature is second order for all values of disorder. We use finite size scaling to determine the transition temperature TC and the critical exponent ,. We find that TC decreases and that , increases with increasing disorder. (© 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

Numerical study of the equilibrium thermodynamics of the Coulomb glass

ANNALEN DER PHYSIK, Issue 12 2009
M. Goethe
We discuss the results of large-scale Monte Carlo simulations of the lattice Coulomb glass model. Using the Exchange Monte Carlo algorithm we are able to equilibrate the system to very low temperature and obtain evidence against the existence of an equilibrium glass transition in three dimensions (3D). We also discuss results for the 3D Random Field Ising model that highlight the role of the interaction range. Finally, we report results for the 2D Coulomb glass, which show a behaviour very similar to the 3D case. [source]