Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas

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.

arXiv comment8 pages, 9 figures

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Cited by in corpus (8)

• Quantum Geometric Contributions to the BKT Transition: Beyond Mean Field Theory
• Topological Fulde-Ferrell Superfluids of a Spin-Orbit Coupled Fermi Gas
• Three-dimensional spin-orbit coupled Fermi gases: Fulde-Ferrell pairing, Majorana fermions, Weyl fermions and gapless topological superfluidity
• Proposed method to realize the $p$-wave superfluid state using a $s$-wave superfluid Fermi gas with a synthetic spin-orbit interaction
• Topological effects on transition temperatures and response functions in three-dimensional Fermi superfluids
• Rashbon bound states associated with a spherical spin-orbit coupling in an ultracold Fermi gas with an $s$-wave interaction
• Anomalous isothermal compressibility in spin-orbit coupled degenerate Fermi gases
• Signatures of topological phase transitions in the s-wave superconductor at finite temperature