Nodal Superconductivity with Multiple Gaps in SmFeAsO$_{0.9}$F$_{0.1}$

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dc.creatorWang, Yonglei
dc.creatorShan, Lei
dc.creatorFang, Lei
dc.creatorCheng, Peng
dc.creatorRen, Cong
dc.creatorWen, Hai-Hu
dc.date2008-06-12
dc.date2008-08-07
dc.date.accessioned2026-07-07T12:08:00Z
dc.date.available2026-07-07T12:08:00Z
dc.descriptionWe report the observation of two gaps in the superconductor SmFeAsO$_{0.9}$F$_{0.1}$ (F-SmFeAsO) with $T_c=51.5K$ as measured by point-contact spectroscopy. Both gaps decrease with temperature and vanish at $T_c$ and the temperature dependence of the gaps are described by the theoretical prediction of the Bardeen-Cooper-Schrieffer (BCS) theory. A zero-bias conductance peak (ZBCP) was observed, indicating the presence of Andreev bound states at the surface of F-SmFeAsO. Our results strongly suggest an unconventional nodal superconductivity with multiple gaps in F-SmFeAsO.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0806.1986
dc.identifierhttp://arxiv.org/abs/0806.1986
dc.identifierSupercond. Sci. Technol. 22 (2009) 015018 (6pp)
dc.identifierdoi:10.1088/0953-2048/22/1/015018
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/209170
dc.subjectSuperconductivity
dc.titleNodal Superconductivity with Multiple Gaps in SmFeAsO$_{0.9}$F$_{0.1}$
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