Electron spectral density in a disordered system of hard sphere scatterers

B.u Felderhof and A Kauerauf

Physica A: Statistical Mechanics and its Applications, 1995, vol. 220, issue 3, 376-389

Abstract: The spectral density of an electron propagating in a disordered system of hard sphere scatterers is studied by use of a self-consistent approximation for the self-energy. The spectral density at fixed wavenumber is found to be a single-peaked function of energy. The approximation yields a sharp wavenumber-dependent band edge. For large wavenumbers the spectral density is well approximated by a Lorentzian, but for small wavenumbers it is dominated by a characteristic square root singularity at the band edge.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:220:y:1995:i:3:p:376-389

DOI: 10.1016/0378-4371(95)00218-V

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