Work

Spin thermoelectrics in a disordered Fermi gas

Year: 2013

Type: article

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 $S=\ensuremath{-}{(\ensuremath{\pi}{k}_{B})}^{2}T{\ensuremath{\sigma}}^{\ensuremath{'}}/3e\ensuremath{\sigma}$ 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.

Source: Physical Review B

DOI: 10.1103/physrevb.87.085309

Authors: J. Borge, C. Gorini, R. Raimondi

Institutions: Roma Tre University, National Interuniversity Consortium for the Physical Sciences of Matter, University of Augsburg

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funder: Deutsche Forschungsgemeinschaft