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High-field superconducting transition of CeCoIn5 studied by local magnetic induction measurements

hal.structure.identifierDepartment of Physics, Kyoto University
dc.contributor.authorOKAZAKI, Ryuji
hal.structure.identifierDepartment of Physics, Kyoto University
dc.contributor.authorSHISHIDO, Hiroaki
hal.structure.identifierDepartment of Physics, Kyoto University
dc.contributor.authorSHIBAUCHI, Takasada
hal.structure.identifierLaboratoire des Solides Irradiés - Irradiated Solids Laboratory [LSI]
dc.contributor.authorKONCZYKOWSKI, Marcin
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
hal.structure.identifierInstitut universitaire de France [IUF]
dc.contributor.authorBUZDIN, Alexandre I.
hal.structure.identifierDepartment of Physics, Kyoto University
hal.structure.identifierInstitute for Solid State Physics [Tokyo] [ISSP]
dc.contributor.authorMATSUDA, Yuji
dc.date.issued2007-12-28
dc.identifier.issn1098-0121
dc.description.abstractEnTo investigate the unusual normal-superconducting phase transition near the upper critical fields at low temperatures of the quasi-two-dimensional heavy fermion compound CeCoIn5, local magnetic induction measurements have been performed by using a micro Hall probe for both H||c and H||a. The local magnetic induction as a function of temperature displays a discontinuous jump at the superconducting phase boundary below the critical temperature T0 approximate to 0.8 K for both field directions, indicating a change from the second- to first-order transition and confirming previously reported bulk measurements on CeCoIn5. The magnetic induction data display an unexpected undershoot behavior just below the jump down, which has never been reported in the bulk measurements. This undershoot is observed at the phase boundary between the normal state and the high-field superconducting phase, which has been attributed to the spatially inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov state. Possible origins of this unusual undershoot behavior are discussed.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enHigh-field superconducting transition of CeCoIn5 studied by local magnetic induction measurements
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.76.224529
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con]
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page224529 (1-5)
bordeaux.volume76
bordeaux.issue22
bordeaux.peerReviewedoui
hal.identifierhal-00401579
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00401579v1
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