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题名: Gapless Topological Fulde-Ferrell Superfluidity in Spin-Orbit Coupled Fermi Gases
作者: Cao, Y ;  Zou, SH ;  Liu, XJ ;  Yi, S ;  Long, GL ;  Hu, H
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2014
卷号: 113, 期号:11, 页码:115302
关键词: MAJORANA FERMIONS ;  SUPERCONDUCTIVITY ;  INSULATORS ;  NANOWIRE
学科分类: Physics
DOI: 10.1103/PhysRevLett.113.115302
通讯作者: Cao, Y (reprint author), Swinburne Univ Technol, Ctr Quantum & Opt Sci, Melbourne, Vic 3122, Australia.
部门归属: [Cao, Ye ;  Liu, Xia-Ji ;  Hu, Hui] Swinburne Univ Technol, Ctr Quantum & Opt Sci, Melbourne, Vic 3122, Australia ;  [Cao, Ye ;  Long, Gui-Lu] Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China ;  [Cao, Ye ;  Long, Gui-Lu] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China ;  [Zou, Shu-Hao ;  Yi, Su] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Long, Gui-Lu] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China ;  [Long, Gui-Lu] Tsinghua Natl Lab Informat Sci & Technol, Beijing 100084, Peoples R China
英文摘要: Topological superfluids usually refer to a superfluid state which is gapped in the bulk but metallic at the boundary. Here we report that a gapless, topologically nontrivial superfluid with an inhomogeneous Fulde-Ferrell pairing order parameter can emerge in a two-dimensional spin-orbit coupled Fermi gas, in the presence of both in-plane and out-of-plane Zeeman fields. The Fulde-Ferrell pairing-induced by the spin-orbit coupling and in-plane Zeeman field-is responsible for this gapless feature. This exotic superfluid has a significant Berezinskii-Kosterlitz-Thouless transition temperature and has robust Majorana edge modes against disorder owing to its topological nature.
资助者: Australian Research Council (ARC) [FT130100815, FT140100003, DP140103231, DP140100637]; NKBRSFC-China [2011CB921502, 2011CB921602]; NSFC-China [11025421, 11228410, 11175094, 91221205]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000342151500008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15653
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Recommended Citation:
Cao, Y,Zou, SH,Liu, XJ,et al. Gapless Topological Fulde-Ferrell Superfluidity in Spin-Orbit Coupled Fermi Gases[J]. PHYSICAL REVIEW LETTERS,2014,113(11):115302.
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