Effects of many-electron jumps in relaxation and conductivity of Coulomb glasses

Details Effects of many-electron jumps in relaxation and conductivity of Coulomb glasses Effects of many-electron jumps in relaxation and conductivity of Coulomb glasses

2011-05-19

arxiv.org/abs/1105.3831v1

Phys. Rev. B 84, 174201 (2011)

Physics

Condensed Matter

Disordered Systems and Neural Networks

8 pages, 6 figures

Scientific paper

A numerical study of the energy relaxation and conductivity of the Coulomb glass is presented. The role of many-electron transitions is studied by two complementary methods: a kinetic Monte Carlo algorithm and a master equation in configuration space method. A calculation of the transition rate for two-electron transitions is presented, and the proper extension of this to multi-electron transitions is discussed. It is shown that two-electron transitions are important in bypassing energy barriers which effectively block sequential one-electron transitions. The effect of two-electron transitions is also discussed.

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