Superconducting properties of (Pb0.05Sn0.95)Te doped with indium under conditions of hydrostatic compression
- Autores: Mikhailin N.1, Parfeniev R.1, Chernyaev A.1, Shamshur D.1, Andrianov G.1
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Afiliações:
- Ioffe Institute
- Edição: Volume 51, Nº 8 (2017)
- Páginas: 1017-1020
- Seção: XV International Conference “Thermoelectrics and Their Applications—2016”, St. Petersburg, November 15–16, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/200883
- DOI: https://doi.org/10.1134/S106378261708022X
- ID: 200883
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Resumo
The superconducting properties of Pb0.05Sn0.95Te semiconductor alloy doped with 5 at % of In are investigated at a hydrostatic pressure of P < 7 kbar. At increasing pressure P > 1.35 kbar and T ≥ 1.3 K, the resistivity step to ρ = 0 in the temperature and magnetic-field dependences ρ(T) and ρ(H), which corresponds to the transition to the superconducting state, disappears. The experimental results are indicative of a decrease in the density of states at the Fermi level with increasing pressure, which can be interpreted as an indium-level shift deep into the valence band. The obtained data refine and supplement the results of studies devoted to investigation of the baric dependences of the critical parameters of the superconducting transition in (PbzSn1–z)0.95In0.05Te with varying lead content z.
Sobre autores
N. Mikhailin
Ioffe Institute
Email: chernyaevav@yandex.ru
Rússia, St. Petersburg, 194021
R. Parfeniev
Ioffe Institute
Email: chernyaevav@yandex.ru
Rússia, St. Petersburg, 194021
A. Chernyaev
Ioffe Institute
Autor responsável pela correspondência
Email: chernyaevav@yandex.ru
Rússia, St. Petersburg, 194021
D. Shamshur
Ioffe Institute
Email: chernyaevav@yandex.ru
Rússia, St. Petersburg, 194021
G. Andrianov
Ioffe Institute
Email: chernyaevav@yandex.ru
Rússia, St. Petersburg, 194021