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arXiv · 1611.06533

Point-contact measurements of the energy gap of lead-chalcogenide-based superconducting superlattices

I. K. Yanson·N. L. Bobrov·L. F. Rybal'chenko·V. V. Fisun·O. A. Mironov·S. V. Chistyakov·A. Yu. Sipatov·A. I. Fedorenko
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Abstract

The energy gap of superconducting $PbTe-PbS$ semiconductor superlattices has been analyzed with the help of point contacts for the first time below the critical temperature, $T_{c}=3.9~K$, and in the fluctuation region $T>T_{c}$. The size of the gap and its dependence on the temperature and field are determined by the position of the point contact inside the superlattice. \pacs{73.40.Jn, 74.25.Kc, 74.45.+c, 74.50.+r., 73.40.-c, 74.78.-w, 74.78.Fk, 74.20.Mn, 74.40.+k.-n, 74.45.+c, 74.62.Dn, 74.70.Ad

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I. K. Yanson, N. L. Bobrov, L. F. Rybal'chenko, V. V. Fisun, O. A. Mironov, S. V. Chistyakov, A. Yu. Sipatov, A. I. Fedorenko. 2017-01-09. Point-contact measurements of the energy gap of lead-chalcogenide-based superconducting superlattices. https://arxiv.org/abs/1611.06533

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