Spin-Seebeck effect in a strongly interacting Fermi gas

C. H. Wong, H. T. C. Stoof, and R. A. Duine
Phys. Rev. A 85, 063613 – Published 15 June 2012

Abstract

We study the spin-Seebeck effect in a strongly interacting, two-component Fermi gas and propose an experiment to measure this effect by relatively displacing spin-up and spin-down atomic clouds in a trap using spin-dependent temperature gradients. We compute the spin-Seebeck coefficient and related spin-heat transport coefficients as functions of temperature and interaction strength. We find that, when the interspin scattering length becomes larger than the Fermi wavelength, the spin-Seebeck coefficient changes sign as a function of temperature, and hence so does the direction of the spin separation. We compute this zero-crossing temperature as a function of interaction strength and in particular in the unitary limit for the interspin scattering.

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  • Received 21 March 2012

DOI:https://doi.org/10.1103/PhysRevA.85.063613

©2012 American Physical Society

Authors & Affiliations

C. H. Wong, H. T. C. Stoof, and R. A. Duine

  • Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands

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Issue

Vol. 85, Iss. 6 — June 2012

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