Please use this identifier to cite or link to this item:
http://elar.urfu.ru/handle/10995/102175
Title: | Direct evidence of two superconducting gaps in FeSe0.5Te0.5: SnS-Andreev spectroscopy and the lower critical field |
Authors: | Kuzmicheva, T. E. Kuzmichev, S. A. Sadakov, A. V. Muratov, A. V. Usoltsev, A. S. Martovitsky, V. P. Shipilov, A. R. Chareev, D. A. Mitrofanova, E. S. Pudalov, V. M. |
Issue Date: | 2016 |
Publisher: | Maik Nauka-Interperiodica Publishing |
Citation: | Direct evidence of two superconducting gaps in FeSe0.5Te0.5: SnS-Andreev spectroscopy and the lower critical field / T. E. Kuzmicheva, S. A. Kuzmichev, A. V. Sadakov, et al. — DOI 10.1134/S0021364016240048 // JETP Letters. — 2016. — Vol. 104. — Iss. 12. — P. 852-858. |
Abstract: | We present direct measurements of the superconducting order parameter in nearly optimal FeSe Te single crystals with the critical temperature TC ≈ 14 K. Using the intrinsic multiple Andreev reflection effect (IMARE) spectroscopy and measurements of the lower critical field, we directly determined two superconducting gaps, ΔL ≈ 3.3−3.4 meV and ΔS ≈ 1 meV, and their temperature dependences. We show that a twoband model fits well the experimental data. The estimated electron–boson coupling constants indicate a strong intraband and a moderate interband interaction. © 2016, Pleiades Publishing, Inc. |
URI: | http://elar.urfu.ru/handle/10995/102175 |
Access: | info:eu-repo/semantics/openAccess |
SCOPUS ID: | 85006142021 |
PURE ID: | 1608149 b4572043-8c9f-433b-9124-8c976f02070b |
ISSN: | 213640 |
DOI: | 10.1134/S0021364016240048 |
Appears in Collections: | Научные публикации, проиндексированные в SCOPUS и WoS CC |
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