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arXiv · 1211.3839

Spin thermoelectrics in a disordered Fermi gas

J. Borge·C. Gorini·R. Raimondi
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Abstract

We study the connection between the spin-heat and spin-charge response in a disordered Fermi gas with spin-orbit coupling. It is shown that the ratio between the above responses can be expressed as the thermopower $S=-(πk_B)^2Tσ'/3eσ$ times a number $R_s$ which depends on the strength and type of the spin-orbit couplings considered. The general results are illustrated by examining different two-dimensional electron or hole systems with different and competing spin-orbit mechanisms, and we conclude that a metallic system could prove much more efficient as a heat-to-spin than as a heat-to-charge converter.

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J. Borge, C. Gorini, R. Raimondi. 2013-02-14. Spin thermoelectrics in a disordered Fermi gas. https://doi.org/10.1103/physrevb.87.085309

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