Multiple band electron-phonon transport theory

Robert Kragler

Physica A: Statistical Mechanics and its Applications, 1980, vol. 102, issue 2, 201-235

Abstract: For an electron-phonon system with several equivalent bands a closed set of integral equations is solved self-consistently using real-time Green's functions. A multiple-band Peierls-Boltzmann equation is deduced from the Bethe-Salpeter equation for the electron density. Relaxation-time approximation together with local particle number conservation allows the calculation of the dielectric response and the displacement response generalized for the multiple-band case. The poles of the latter response function, essentially governed by electron density fluctuations, determine three coupled modes. A soft-mode instability is found in agreement with A15- compounds.

Date: 1980
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:102:y:1980:i:2:p:201-235

DOI: 10.1016/0378-4371(80)90133-8

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