Density of States and Critical Behavior of the Coulomb Glass

Details Density of States and Critical Behavior of the Coulomb Glass Density of States and Critical Behavior of the Coulomb Glass

2008-05-29

arxiv.org/abs/0805.4640v2

Phys. Rev. Lett. 102, 067205 (2009)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 2 figures, 1 table

Scientific paper

10.1103/PhysRevLett.102.067205

We present zero-temperature simulations for the single-particle density of states of the Coulomb glass. Our results in three dimensions are consistent with the Efros and Shklovskii prediction for the density of states. Finite-temperature Monte Carlo simulations show no sign of a thermodynamic glass transition down to low temperatures, in disagreement with mean-field theory. Furthermore, the random-displacement formulation of the model undergoes a transition into a distorted Wigner crystal for a surprisingly broad range of the disorder strength.

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