A possible method to confirm $\pm s$-wave pairing state using the Riedel anomaly in Fe-pnictide superconductors

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dc.creatorInotani, Daisuke
dc.creatorOhashi, Yoji
dc.date2009-01-13
dc.date.accessioned2026-07-07T12:28:54Z
dc.date.available2026-07-07T12:28:54Z
dc.descriptionWe theoretically propose a method to identify $\pm s$-wave order parameter in recently discovered Fe-pnictide superconductors. Our idea uses the Riedel anomaly in ac-Josephson current through an SI($\pm$ S) (single-band s-wave superconductor/insulator/$\pm$s-wave two-band superconductor) junction. We show that the Riedel peak effect leads to vanishing ac-Josephson current at some values of biased voltage. This phenomenon does not occur in the case when the $\pm s$-wave superconductor is replaced by a conventional s-wave one, so that the observation of this vanishing Josephson current would be a clear signature of $\pm s$-wave pairing state in Fe-pnictide superconductors.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0901.1718
dc.identifierhttp://arxiv.org/abs/0901.1718
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/215696
dc.subjectSuperconductivity
dc.titleA possible method to confirm $\pm s$-wave pairing state using the Riedel anomaly in Fe-pnictide superconductors
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