Superconducting properties of (Pb0.05Sn0.95)Te doped with indium under conditions of hydrostatic compression
- Авторлар: Mikhailin N.1, Parfeniev R.1, Chernyaev A.1, Shamshur D.1, Andrianov G.1
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Мекемелер:
- Ioffe Institute
- Шығарылым: Том 51, № 8 (2017)
- Беттер: 1017-1020
- Бөлім: 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
Дәйексөз келтіру
Аннотация
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.
Авторлар туралы
N. Mikhailin
Ioffe Institute
Email: chernyaevav@yandex.ru
Ресей, St. Petersburg, 194021
R. Parfeniev
Ioffe Institute
Email: chernyaevav@yandex.ru
Ресей, St. Petersburg, 194021
A. Chernyaev
Ioffe Institute
Хат алмасуға жауапты Автор.
Email: chernyaevav@yandex.ru
Ресей, St. Petersburg, 194021
D. Shamshur
Ioffe Institute
Email: chernyaevav@yandex.ru
Ресей, St. Petersburg, 194021
G. Andrianov
Ioffe Institute
Email: chernyaevav@yandex.ru
Ресей, St. Petersburg, 194021