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arXiv · 1105.2250

Spin-Orbit Coupled Fermi Gases across a Feshbach Resonance

Zeng-Qiang Yu·Hui Zhai
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Abstract

In this letter we study both ground state properties and the superfluid transition temperature of a spin-1/2 Fermi gas across a Feshbach resonance with a synthetic spin-orbit coupling, using mean-field theory and exact solution of two-body problem. We show that a strong spin-orbit coupling can significantly enhance the pairing gap for 1/(k_F a_s)<=0 due to increased density-of-state. Strong spin-orbit coupling also significantly enhances the superfluid transition temperature when 1/(k_F a_s)<=0, while suppresses it slightly when 1/(k_F a_s)>0. The universal interaction energy and pair size at resonance are also discussed.

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Zeng-Qiang Yu, Hui Zhai. 2011-05-28. Spin-Orbit Coupled Fermi Gases across a Feshbach Resonance. https://doi.org/10.1103/physrevlett.107.195305

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