Node-like excitations in superconducting PbMo6S8 probed by scanning tunneling spectroscopy

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dc.creatorDubois, C.
dc.creatorPetrovic, A. P.
dc.creatorSanti, G.
dc.creatorBerthod, C.
dc.creatorManuel, A. A.
dc.creatorDecroux, M.
dc.creatorFischer, O.
dc.creatorPotel, M.
dc.creatorChevrel, R.
dc.date2007-02-12
dc.date.accessioned2026-07-07T08:46:59Z
dc.date.available2026-07-07T08:46:59Z
dc.descriptionWe present the first scanning tunneling spectroscopy study on the Chevrel phase PbMo6S8, an extreme type II superconductor with a coherence length only slightly larger than in high-Tc cuprates. Tunneling spectra measured on atomically flat terraces are spatially homogeneous and show well-defined coherence peaks. The low-energy spectral weight, the zero bias conductance and the temperature dependence of the gap are incompatible with a conventional isotropic s-wave interpretation, revealing the presence of low-energy excitations in the superconducting state. We show that our data are consistent with the presence of nodes in the superconducting gap.
dc.descriptionTo appear in PRB; 5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0702258
dc.identifierhttp://arxiv.org/abs/cond-mat/0702258
dc.identifierPhys. Rev. B 75, 104501 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.104501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/143443
dc.subjectSuperconductivity
dc.titleNode-like excitations in superconducting PbMo6S8 probed by scanning tunneling spectroscopy
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