Spin thermoelectrics in a disordered Fermi gas

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 $S=-(\pi k_B{)}^{2}T{\sigma }^{\prime }/3e\sigma$ 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.

6 pages, 1 figure

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Cited by in corpus (10)

• Berry-phase effects in dipole density and Mott relation
• Thermally-induced spin polarization of a two dimensional electron gas
• On the longitudinal spin current induced by a temperature gradient in a ferromagnetic insulator
• Spin Hall and spin Nernst effects in a two-dimensional electron gas with Rashba spin-orbit interaction: temperature dependence
• Conserved spin current for the Mott relation
• Spin-resolved orbital magnetization in Rashba two-dimensional electron gas
• Room temperature spin thermoelectrics in metallic films
• Magnon-driven longitudinal spin Seebeck effect in F|N and N|F|N structures: role of asymmetric in-plane magnetic anisotropy
• Seebeck effects in two-dimensional spin transistors
• Spin Hall magnetoresistance and spin Nernst magnetothermopower: role of the inverse spin galvanic effect