Analysis of nonlinear conductivity of point contacts on the base of FeSe in the normal and superconducting state
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Analysis of nonlinear conductivity of point contacts on the base of FeSe in the normal and superconducting state
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| Creator |
Naidyuk, Yu.G.
Gamayunova, N.V. Kvitnitskaya, O.E. Fuchs, G. Chareev, D.A. Vasiliev, A.N. |
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| Subject |
Свеpхпpоводимость, в том числе высокотемпеpатуpная
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| Description |
Nonlinear conductivity of point contacts (PCs) on the base of FeSe single crystals has been investigated. Measured dV/dI dependencies demonstrate the prevailing contribution to the PC conductivity caused by the degraded surface. Superconducting (SC) feature in dV/dI like a sharp zero-bias minimum develops for relatively low ohmic PCs, where the deep areas of FeSe are involved. Analysis of dV/dI has shown that the origin of the zero-bias minimum is connected with the Maxwell part of the PC resistance, what masks energy dependent spectral peculiarities. Even so, we have found the specific features in dV/dI — the sharp side maxima, which may have connection to the SC gap, since their position follows the BCS temperature dependence. Exploring the dV/dI spectra of the rare occurrence with Andreev-like structure, the two gaps with Δ = 2.5 and 3.5 meV were identified. |
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| Date |
2018-01-09T15:38:24Z
2018-01-09T15:38:24Z 2016 |
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| Type |
Article
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| Identifier |
Analysis of nonlinear conductivity of point contacts on the base of FeSe in the normal and superconducting state / u.G. Naidyuk, N.V. Gamayunova, O.E. Kvitnitskaya, G. Fuchs, D.A. Chareev, A.N. Vasiliev // Физика низких температур. — 2016. — Т. 42, № 1. — С. 42–48. — Бібліогр.: 26 назв. — англ.
0132-6414 PACS: 74.45.+c, 74.70.–b, 74.70.Xa http://dspace.nbuv.gov.ua/handle/123456789/128447 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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