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arXiv · 0707.1905

s-Wave superconductivity in non-centrosymmetric Re_3W probed by magnetic penetration depth

Y. L. Zuev·V. A. Kuznetsova·R. Prozorov·M. D. Vannette·M. V. Lobanov·D. K. Christen·J. R. Thompson
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Abstract

We report measurements of the temperature dependence of the magnetic penetration depth λ(T) in non-centrosymmetric superconductor Re_3W. We employed two experimental techniques: extraction of λ(T) from magnetic {\em 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 $Δ(0)/k_BT_C=1.76$. No evidence for unconventional pairing resulting from the absence of the inversion symmetry is found.

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Y. L. Zuev, V. A. Kuznetsova, R. Prozorov, M. D. Vannette, M. V. Lobanov, D. K. Christen, J. R. Thompson. 2007-07-12. s-Wave superconductivity in non-centrosymmetric Re_3W probed by magnetic penetration depth. https://arxiv.org/abs/0707.1905

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