Hydrodynamical thermotransport relaxation times of semiconductor electrons via acoustic phonons

Details Hydrodynamical thermotransport relaxation times of semiconductor electrons via acoustic phonons Hydrodynamical thermotransport relaxation times of semiconductor electrons via acoustic phonons

2007-07-20

arxiv.org/abs/0707.3086v1

Rev. Mex. Fis. S 53 (2007) 82-86

Physics

Condensed Matter

Statistical Mechanics

5 pages; to appear in Rev. Mex. Fis

Scientific paper

We propose a hydrodynamic model to study the thermotransport properties of semiconductor electrons. From the semiclassical Boltzmann equation a set of balance equations is built for the relevant fields. The electron density, the electron energy density, the electric current density and the heat flux density are considered as the basic fields of direct transport and cross effect fluxes. The kinetic relaxation times of the production terms are calculated by considering the electron-acoustic phonon interaction as the leading microscopic scattering process. To justify the long time thermalization regime, the Onsager symmetry relations are proved, both on the completely degenerate and non degenerate limits.

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