Coulomb gap in disordered systems: Computer simulation

S. D. Baranovskii, A. L. Efros, B. L. Gelmont, B. I. Shklovskii

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157 Scopus citations

Abstract

The density of states (DS) of a disordered system with localised electronic states is studied in the vicinity of the Fermi level with the Monte-Carlo computer simulation for the two- and three-dimensional simple model. The minimisation of the total energy with respect to all one-electron transitions is shown to be a good approximation both for the total energy and for the DS. The electron-electron interaction drastically changes the DS in the vicinity of the Fermi level. The DS is shown to have a 'soft' Coulomb gap, and the self-consistent equation fits the results of simulation well. The finite size effect is also studied.

Original languageEnglish (US)
Article number015
Pages (from-to)1023-1034
Number of pages12
JournalJournal of Physics C: Solid State Physics
Volume12
Issue number6
DOIs
StatePublished - Dec 1 1979

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