Coulomb gap in disordered systems

作者：Alexei L. Efros · 发表于：Journal of Physics C Solid State Physics · 年份：1976 · DOI：10.1088/0022-3719/9/11/012 · 被引用次数：338 · 研究领域：Advanced Condensed Matter Physics、Glass properties and applications、Theoretical and Computational Physics

The properties of low-energy excitations in a disordered system with localized electrons are discussed. A simple model and a self-consistent method for the calculation of the density of states are proposed. It is argued that in a three-dimensional system there are in fact no low-energy one-particle excitations, but many-particle charged excitations exist and determine the d.c. conductivity of the system. Formulae are given for the density of states of such excitations and for the d.c. conductivity.