Yu. I. Gorina, M. V. Golubkov, T. I. Osina, V. V. Rodin, N. N. Sentyurina, S. G. Chernook, V. A. Stepanov, “Two-band superconductivity of Sn$_{1-x}$In$_{x}$Te crystals with $T_{c}$ = 3.6–3.8 K”, Fizika Tverdogo Tela, 2017, Volume 59, Issue 10,Pages 1897

This article is cited in 2 papers

Superconductivity

Two-band superconductivity of Sn$_{1-x}$In$_{x}$Te crystals with $T_{c}$ = 3.6–3.8 K

Yu. I. Gorina^a, M. V. Golubkov^a, T. I. Osina^a, V. V. Rodin^a, N. N. Sentyurina^a, S. G. Chernook^ab, V. A. Stepanov^a

^a P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
^b Fiber Optics Research Center of the Russian Academy of Sciences, Moscow

Abstract: The Andreev reflection spectra of high-quality superconducting Sn$_{1-x}$In$_{x}$Te crystals with critical temperature $T_{c}$ = 3.6–3.8 K were examined. The two-band nature of the superconducting state of this compound was established. The energy gaps have s-symmetry and were measured to be 2$\Delta_{1}/kT_{c}$ = 3.5 $\pm$ 0.9 and 2$\Delta_{2}/kT_{c}$ = 7 $\pm$ 1. Neither of the contacts with a resistance of 1.5–23 $\Omega$ revealed a peak at zero voltage typical of the topological superconducting state.

Received: 08.11.2016
Revised: 03.04.2017

DOI: 10.21883/FTT.2017.10.44956.409