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    Spin-orbit-coupled topological Fulde-Ferrell states of fermions in a harmonic trap

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    Author
    Jiang, Lei; Tiesinga, Eite; Liu, Xia-Ji; Hu, Hui; Pu, Han
    Date
    2014
    Abstract
    Motivated by recent experimental breakthroughs in generating spin-orbit coupling in ultracold Fermi gases using Raman laser beams, we present a systematic study of spin-orbit-coupled Fermi gases confined in a quasi-one-dimensional trap in the presence of an in-plane Zeeman field (which can be realized using a finite two-photon Raman detuning). We find that a topological Fulde-Ferrell state will emerge, featuring finite-momentum Cooper pairing and zero-energy Majorana excitations localized near the edge of the trap based on the self-consistent Bogoliubov–de Gennes (BdG) equations. We find analytically the wave functions of the Majorana modes. Finally, using the time-dependent BdG, we show how the finite-momentum pairing field manifests itself in the expansion dynamics of the atomic cloud.
    Citation
    Jiang, Lei, Tiesinga, Eite, Liu, Xia-Ji, et al.. "Spin-orbit-coupled topological Fulde-Ferrell states of fermions in a harmonic trap." Physical Review A, 90, no. 5 (2014) American Physical Society: https://doi.org/10.1103/PhysRevA.90.053606.
    Published Version
    https://doi.org/10.1103/PhysRevA.90.053606
    Type
    Journal article
    Publisher
    American Physical Society
    Citable link to this page
    https://hdl.handle.net/1911/94805
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • Faculty Publications [5504]
    • Physics and Astronomy Publications [1883]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map