Spin-Seebeck effect in a strongly interacting Fermi gas
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 inter-spin 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 inter-spin scattering.
Cite
@article{arxiv.1203.3745,
title = {Spin-Seebeck effect in a strongly interacting Fermi gas},
author = {C. H. Wong and H. T. C. Stoof and R. A. Duine},
journal= {arXiv preprint arXiv:1203.3745},
year = {2012}
}