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Superconducting gap and vortex lattice of the heavy-fermion compound CeCu2Si2

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dc.contributor.authorEnayat, Mostafa
dc.contributor.authorSun, Zhixiang
dc.contributor.authorMaldonado, Ana
dc.contributor.authorSuderow, Hermann
dc.contributor.authorSeiro, Silvia
dc.contributor.authorGeibel, Christoph
dc.contributor.authorWirth, Steffen
dc.contributor.authorSteglich, Frank
dc.contributor.authorWahl, Peter
dc.date.accessioned2016-02-16T16:10:07Z
dc.date.available2016-02-16T16:10:07Z
dc.date.issued2016-01-20
dc.identifier.citationEnayat , M , Sun , Z , Maldonado , A , Suderow , H , Seiro , S , Geibel , C , Wirth , S , Steglich , F & Wahl , P 2016 , ' Superconducting gap and vortex lattice of the heavy-fermion compound CeCu 2 Si 2 ' , Physical Review. B, Condensed matter and materials physics , vol. 93 , no. 4 , 045123 . https://doi.org/10.1103/PhysRevB.93.045123en
dc.identifier.issn1098-0121
dc.identifier.otherPURE: 240105224
dc.identifier.otherPURE UUID: fec3d093-4e5e-4504-8be2-dd706a04634e
dc.identifier.otherArXiv: http://arxiv.org/abs/1505.00804v2
dc.identifier.otherScopus: 84955478465
dc.identifier.otherORCID: /0000-0002-8635-1519/work/46939683
dc.identifier.otherWOS: 000368487000004
dc.identifier.urihttps://hdl.handle.net/10023/8242
dc.descriptionZS acknowledges support from NWO (grant no. 680.50.1119)en
dc.description.abstractThe order parameter and pairing mechanism for superconductivity in heavy-fermion compounds are still poorly understood. Scanning tunneling microscopy and spectroscopy at ultralow temperatures can yield important information about the superconducting order parameter and the gap structure. Here, we study the first heavy-fermion superconductor, CeCu2Si2. Our data show the superconducting gap which is not fully formed and exhibits features that point to a multigap order parameter. Spatial mapping of the zero-bias conductance in magnetic field reveals the vortex lattice, which allows us to unequivocally link the observed conductance gap to superconductivity in CeCu2Si2. The vortex lattice is found to be predominantly triangular with distortions at fields close to ∼0.7Hc2.
dc.language.isoeng
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rights© 2016 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at https://dx.doi.org/10.1103/PhysRevB.93.045123en
dc.subjectQC Physicsen
dc.subjectDASen
dc.subject.lccQCen
dc.titleSuperconducting gap and vortex lattice of the heavy-fermion compound CeCu2Si2en
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.93.045123
dc.description.statusPeer revieweden
dc.identifier.grantnumberEP/I031014/1en


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