Please use this identifier to cite or link to this item: https://doi.org/10.1088/1367-2630/15/2/023023
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dc.titleGapless inhomogeneous superfluid phase with spin-dependent disorder
dc.contributor.authorJiang, M
dc.contributor.authorNanguneri, R
dc.contributor.authorTrivedi, N
dc.contributor.authorBatrouni, G.G
dc.contributor.authorScalettar, R.T
dc.date.accessioned2020-10-27T04:48:20Z
dc.date.available2020-10-27T04:48:20Z
dc.date.issued2013
dc.identifier.citationJiang, M, Nanguneri, R, Trivedi, N, Batrouni, G.G, Scalettar, R.T (2013). Gapless inhomogeneous superfluid phase with spin-dependent disorder. New Journal of Physics 15 : 23023. ScholarBank@NUS Repository. https://doi.org/10.1088/1367-2630/15/2/023023
dc.identifier.issn1367-2630
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/180804
dc.description.abstractWe show that the presence of a spin-dependent random potential in a superconductor or a superfluid atomic gas leads to distinct transitions at which the energy gap and average order parameter vanish, generating an intermediate gapless superfluid phase, in marked contrast to the case of spin-symmetric randomness where no such gapless superfluid phase is seen. By allowing the pairing amplitude to become inhomogeneous, the gapless superconducting phase persists up to considerably higher disorder compared with the prediction of Abrikosov-Gorkov. The low-lying excited states are located predominantly in regions where the pairing amplitude vanishes and coexist with the superfluid regions with a finite pairing. Our results are based on inhomogeneous Bogoliubov-de Gennes mean field theory for a two-dimensional attractive Hubbard model with spin-dependent disorder. © IOP Publishing and Deutsche Physikalische Gesellschaft.
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceUnpaywall 20201031
dc.subjectAtomic gas
dc.subjectLow-lying excited state
dc.subjectOrder parameter
dc.subjectPairing amplitude
dc.subjectRandom potentials
dc.subjectSuperconducting phase
dc.subjectSuperfluid phase
dc.subjectSuperfluid regions
dc.subjectMean field theory
dc.subjectSuperconductivity
dc.typeArticle
dc.contributor.departmentCENTRE FOR QUANTUM TECHNOLOGIES
dc.description.doi10.1088/1367-2630/15/2/023023
dc.description.sourcetitleNew Journal of Physics
dc.description.volume15
dc.description.page23023
dc.published.statePublished
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