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dc.contributor.authorHuang, C. L.en_US
dc.contributor.authorLin, J. -Y.en_US
dc.contributor.authorChang, Y. T.en_US
dc.contributor.authorSun, C. P.en_US
dc.contributor.authorShen, H. Y.en_US
dc.contributor.authorChou, C. C.en_US
dc.contributor.authorBerger, H.en_US
dc.contributor.authorLee, T. K.en_US
dc.contributor.authorYang, H. D.en_US
dc.date.accessioned2019-04-03T06:40:40Z-
dc.date.available2019-04-03T06:40:40Z-
dc.date.issued2007-12-01en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.76.212504en_US
dc.identifier.urihttp://hdl.handle.net/11536/149346-
dc.description.abstractTo resolve the discrepancies of the superconducting order parameter in quasi-two-dimensional NbSe2, comprehensive specific-heat measurements have been carried out. By analyzing both the zero-field and mixed-state data with magnetic fields perpendicular (H perpendicular to c) to and parallel (H parallel to c) to the c axis of the crystal and using the two-gap model, we conclude that (1) more than one energy scale of the order parameter is required for superconducting NbSe2 due to the thermodynamic consistency; (2) Delta(L)=1.26 meV and Delta(S)=0.73 meV are obtained; (3) N-S(0)/N(0)=11%-20%; (4) the observation of the kink in gamma(H) curve suggests that the two-gap scenario is more favorable than the anisotropic s-wave model to describe the gap structure of NbSe2; and (5) Delta(S) is more isotropic and has a three-dimensional-like feature and is located either on the Se or the bonding Nb Fermi sheets.en_US
dc.language.isoen_USen_US
dc.titleExperimental evidence for a two-gap structure of superconducting NbSe2: A specific-heat study in external magnetic fieldsen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevB.76.212504en_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume76en_US
dc.citation.issue21en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentInstitute of Physicsen_US
dc.identifier.wosnumberWOS:000251986100017en_US
dc.citation.woscount35en_US
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