Evidence for s-wave superconductivity in noncentrosymmetric Re(3)W from magnetic penetration depth measurementsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We report measurements of the temperature dependence of the magnetic penetration depth lambda(T) in noncentrosymmetric superconductor Re(3)W. We employed two experimental techniques: extraction of lambda(T) from magnetic dc susceptibility, measured on a powder sample, and the rf tunnel diode resonator technique, where a bulk polycrystalline sample was used. The results of both techniques agree: the temperature dependence of the penetration depth can be well described by weak-coupling, dirty-limit, s-wave BCS theory where we obtain Delta(0)/k(B)T(C)=1.76 +/- 0.05. No evidence for unconventional pairing resulting from the absence of the inversion symmetry is found.