| Autor: |
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. |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
JETP Letters 104, 852 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1134/S0021364016240048 |
| Popis: |
We present direct measurements of the superconducting order parameter in nearly optimal FeSe$_{0.5}$Te$_{0.5}$ single crystals with critical temperature $T_C \approx 14$ K. Using intrinsic multiple Andreev reflection effect (IMARE) spectroscopy and measurements of lower critical field, we directly determined two superconducting gaps, $\Delta_L \approx 3.3 - 3.4$ meV and $\Delta_S \approx 1$ meV, and their temperature dependences. We show that a two-band model fits well the experimental data. The estimated electron-boson coupling constants indicate a strong intraband and a moderate interband interaction. |
| Databáze: |
arXiv |
| Externí odkaz: |
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