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arXiv · 1407.3203

Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas

Zhen Zheng·Han Pu·Xubo Zou·Guangcan Guo
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Abstract

We investigate the thermodynamic properties of a superfluid Fermi gas subject to Rashba spin-orbit coupling and effective Zeeman field. We adopt a T-matrix scheme that takes beyond-mean-field effects, which are important for strongly interacting systems, into account. We focus on the calculation of two important quantities: the superfluid transition temperature and the isothermal compressibility. Our calculation shows very distinct influences of the out-of-plane and the in-plane Zeeman fields on the Fermi gas. We also confirm that the in-plane Zeeman field induces a Fulde-Ferrell superfluid below the critical temperature and an exotic finite-momentum pseudo-gap phase above the critical temperature.

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Zhen Zheng, Han Pu, Xubo Zou, Guangcan Guo. 2014-12-16. Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas. https://doi.org/10.1103/physreva.90.063623

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