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Condensed Matter > Quantum Gases

arXiv:1304.0387 (cond-mat)
[Submitted on 1 Apr 2013 (v1), last revised 9 Oct 2013 (this version, v2)]

Title:Fulde-Ferrell superfluidity in ultracold Fermi gases with Rashba spin-orbit coupling

Authors:Hui Hu, Xia-Ji Liu
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Abstract:We theoretically investigate the inhomogeneous Fulde-Ferrell (FF) superfluidity in a three dimensional atomic Fermi gas with Rashba spin-orbit coupling near a broad Feshbach resonance. We show that within mean-field theory the FF superfluid state is always more favorable than the standard Bardeen-Cooper-Schrieffer (BCS) superfluid state when an in-plane Zeeman field is applied. We present a qualitative finite-temperature phase diagram near resonance and argue that the predicted FF superfluid is observable with experimentally attainable temperatures (i.e., $T\sim0.2T_{F}$, where $T_{F}$ is the characteristic Fermi degenerate temperature).
Comments: 7 figures
Subjects: Quantum Gases (cond-mat.quant-gas); Strongly Correlated Electrons (cond-mat.str-el); Superconductivity (cond-mat.supr-con)
Cite as: arXiv:1304.0387 [cond-mat.quant-gas]
  (or arXiv:1304.0387v2 [cond-mat.quant-gas] for this version)
  https://doi.org/10.48550/arXiv.1304.0387
Journal reference: New J. Phys. 15, 093037 (2013)
Related DOI: https://doi.org/10.1088/1367-2630/15/9/093037

Submission history

From: Hui Hu [view email]
[v1] Mon, 1 Apr 2013 16:16:07 UTC (267 KB)
[v2] Wed, 9 Oct 2013 00:37:10 UTC (426 KB)
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