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.

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Cited by in corpus (11)

• A thermoelectric heat engine with ultracold atoms
• Two-terminal transport measurements with cold atoms
• Peltier cooling of fermionic quantum gases
• Thermoelectric transport and Peltier cooling of cold atomic gases
• On the longitudinal spin current induced by a temperature gradient in a ferromagnetic insulator
• Heat and spin transport in a cold atomic Fermi gas
• Magnon-driven longitudinal spin Seebeck effect in F|N and N|F|N structures: role of asymmetric in-plane magnetic anisotropy
• Spin Drag of a Fermi Gas in a Harmonic Trap
• Density and spin modes in imbalanced normal Fermi gases from collisionless to hydrodynamic regime
• Spin-heat relaxation and thermo-spin diffusion in atomic Bose and Fermi gases
• Generation of spin currents by a temperature gradient in a two-terminal device