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Fulde-Ferrell-Larkin-Ovchinnikov states and quantum oscillations in mesoscopic superconductors and superfluid ultracold Fermi gases

hal.structure.identifierInstitute for Physics of Microstructures of the RAS
dc.contributor.authorSAMOKHVALOV, A. V.
hal.structure.identifierInstitute for Physics of Microstructures of the RAS
dc.contributor.authorMEL'NIKOV, A. S.
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
hal.structure.identifierInstitut universitaire de France [IUF]
dc.contributor.authorBUZDIN, Alexandre I.
dc.date.created2010-09-02
dc.date.issued2010-11-23
dc.identifier.issn1098-0121
dc.description.abstractEnWe have studied the distinctive features of the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) instability and phase transitions in two--dimensional (2D) mesoscopic superconductors placed in magnetic field of arbitrary orientation and rotating superfluid Fermi gases with imbalanced state populations. Using a generalized version of the phenomenological Ginzburg-Landau theory we have shown that the FFLO states are strongly modified by the effect of the trapping potential confining the condensate. The phenomenon of the inhomogeneous state formation is determined by the interplay of three length scales: (i) length scale of the FFLO instability; (ii) 2D system size; (iii) length scale associated with the orbital effect caused either by the Fermi condensate rotation or magnetic field component applied perpendicular to the superconducting disc. We have studied this interplay and resulting quantum oscillation effects in both superconducting and superfluid finite -- size systems with FFLO instability and described the hallmarks of the FFLO phenomenon in a restricted geometry. The finite size of the system is shown to affect strongly the conditions of the observability of switching between the states with different vorticities.
dc.description.sponsorshipElectronic EPR Source - ANR-07-NANO-0011
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enFulde-Ferrell-Larkin-Ovchinnikov states and quantum oscillations in mesoscopic superconductors and superfluid ultracold Fermi gases
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.82.174514
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Gaz Quantiques [cond-mat.quant-gas]
dc.identifier.arxiv1009.0349
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page174514 (8)
bordeaux.volume82
bordeaux.issue17
bordeaux.peerReviewedoui
hal.identifierhal-00563400
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00563400v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20B:%20Condensed%20Matter%20and%20Materials%20Physics%20(1998-2015)&rft.date=2010-11-23&rft.volume=82&rft.issue=17&rft.spage=174514%20(8)&rft.epage=174514%20(8)&rft.eissn=1098-0121&rft.issn=1098-0121&rft.au=SAMOKHVALOV,%20A.%20V.&MEL'NIKOV,%20A.%20S.&BUZDIN,%20Alexandre%20I.&rft.genre=article


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