| Autor: |
Mironov AY; Department of Physics, Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia. A V Rzhanov Institute of Semiconductor Physics SB RAS, 13 Lavrentjev Av., 630090 Novosibirsk, Russia., Postolova SV, Baturina TI |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of physics. Condensed matter : an Institute of Physics journal [J Phys Condens Matter] 2018 Dec 05; Vol. 30 (48), pp. 485601. Date of Electronic Publication: 2018 Nov 12. |
| DOI: |
10.1088/1361-648X/aae870 |
| Abstrakt: |
The onset of superconductivity in the presence of disorder is a fundamental problem of condensed matter physics. Here we investigate the magnetoconductance of disordered ([Formula: see text]) superconducting TiN films above the critical temperature T c . We show that the magnetoconductivity of moderately disordered films with [Formula: see text] is in full agreement with the perturbative theory of quantum contributions to conductivity. We demonstrate that the magnetoconductivity of films with [Formula: see text] is also in agreement with the perturbative theory down to temperatures [Formula: see text]. The quantitative discrepancy between experiment and theory develops only below temperatures [Formula: see text] for films with [Formula: see text]. This discrepancy can be eliminated if we assume steeper temperature dependence of the Larkin's electron-electron attraction strength, [Formula: see text]. The obtained temperature dependence of electron phase breaking time [Formula: see text] is in agreement with theoretical predictions for all samples. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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