Publication:
Hofstadter-Hubbard model with opposite magnetic fields: Bardeen-Cooper-Schrieffer pairing and superfluidity in the nearly flat butterfly bands

dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorIşkın, Menderes
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.date.accessioned2024-11-09T11:53:24Z
dc.date.issued2017
dc.description.abstractDespite the multiband spectrum of the widely known Hofstadter butterfly, it turns out that the pairing correlations of the time-reversal-symmetric Hofstadter-Hubbard model are well described by a single order parameter that is uniform in real space. By exploiting a BCS mean-field theory for the nearly flat butterfly-bands regime of lowmagnetic-flux limit, here we reveal a number of unusual superfluid properties both in the ground state and at finite temperatures. Our thorough analysis includes but is not limited to the order parameter, condensate, and superfluid fractions, and the critical BCS and Berezinskii-Kosterlitz-Thouless transition temperatures.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue4
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.sponsorshipBAGEP of Turkish Science Academy
dc.description.versionPublisher version
dc.description.volume96
dc.identifier.doi10.1103/PhysRevA.96.043628
dc.identifier.eissn2469-9934
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR01343
dc.identifier.issn2469-9926
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85032439011
dc.identifier.urihttps://hdl.handle.net/20.500.14288/769
dc.identifier.wos413846400005
dc.keywordsElectron energy analyzers
dc.keywordsGround state
dc.keywordsMean field theory
dc.keywordsWave functions
dc.keywordsBardeen-Cooper-Schrieffer
dc.keywordsBerezinskii-Kosterlitz-Thouless transition
dc.keywordsFinite temperatures
dc.keywordsMulti-band spectrum
dc.keywordsOrder parameter
dc.keywordsPairing correlations
dc.keywordsSuperfluid fractions
dc.keywordsSuperfluid properties
dc.language.isoeng
dc.publisherAmerican Physical Society (APS)
dc.relation.ispartofPhysical Review A
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/4923
dc.subjectPhysics
dc.titleHofstadter-Hubbard model with opposite magnetic fields: Bardeen-Cooper-Schrieffer pairing and superfluidity in the nearly flat butterfly bands
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorIşkın, Menderes
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
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