Evidence of s-Wave Subdominant Order Parameter in YBCO from Break Junction Tunneling Spectra

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dc.creatorAkimenko, A. I.
dc.creatorBobba, F.
dc.creatorGiubileo, F.
dc.creatorGudimenko, V.
dc.creatorScarfato, A.
dc.creatorCucolo, A. M.
dc.date2006-06-21
dc.date2007-04-24
dc.date.accessioned2026-07-07T07:57:52Z
dc.date.available2026-07-07T07:57:52Z
dc.descriptionThe tunneling spectra of YBa2Cu3O7 break-junctions have been investigated for the tunneling direction close to the node one. The zero-bias conductance peak (ZBCP) and Josephson current have been studied with temperature and magnetic field. The observed deep splitting of ZBCP which starts at Ts<20-30K is in agreement with the theory for the dx2-y2+-is order parameter [Y. Tanuma, Y. Tanaka, and S. Kashiwaya, Phys. Rev. B 64, 214519 (2001)]. The low (0.04T) magnetic field depresses significantly such splitting. The 1/T temperature dependence of maximum Josephson current goes to saturation at T<Ts also confirming the mixed order parameter formation.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0606552
dc.identifierhttp://arxiv.org/abs/cond-mat/0606552
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127805
dc.subjectSuperconductivity
dc.titleEvidence of s-Wave Subdominant Order Parameter in YBCO from Break Junction Tunneling Spectra
dc.typetext

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