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Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films. / Mironov, A. Yu; Postolova, S. V.; Baturina, T. I.

In: Journal of Physics Condensed Matter, Vol. 30, No. 48, 485601, 12.11.2018, p. 485601.

Research output: Contribution to journal › Article › peer-review

Harvard

Mironov, AY, Postolova, SV & Baturina, TI 2018, 'Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films', Journal of Physics Condensed Matter, vol. 30, no. 48, 485601, pp. 485601. https://doi.org/10.1088/1361-648X/aae870

APA

Mironov, A. Y., Postolova, S. V., & Baturina, T. I. (2018). Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films. Journal of Physics Condensed Matter, 30(48), 485601. [485601]. https://doi.org/10.1088/1361-648X/aae870

Vancouver

Mironov AY, Postolova SV, Baturina TI. Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films. Journal of Physics Condensed Matter. 2018 Nov 12;30(48):485601. 485601. doi: 10.1088/1361-648X/aae870

Author

Mironov, A. Yu ; Postolova, S. V. ; Baturina, T. I. / Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films. In: Journal of Physics Condensed Matter. 2018 ; Vol. 30, No. 48. pp. 485601.

BibTeX

@article{442bc4f2c73b4584b07b4dad90a344c6,
title = "Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films",
abstract = "The onset of superconductivity in the presence of disorder is a fundamental problem of condensed matter physics. Here we investigate the magnetoconductance of disordered (8 > kFl > 1.8) superconducting TiN films above the critical temperature Tc. We show that the magnetoconductivity of moderately disordered films with kFl > 5 is in full agreement with the perturbative theory of quantum contributions to conductivity. We demonstrate that the magnetoconductivity of films with kFl ≲ 5 is also in agreement with the perturbative theory down to temperatures T ≈ 2Tc . The quantitative discrepancy between experiment and theory develops only below temperatures T - 2Tc for films with kFl ≈ 5. This discrepancy can be eliminated if we assume steeper temperature dependence of the Larkin's electron'electron attraction strength, Β(T/Tc). The obtained temperature dependence of electron phase breaking time τ (T/Tc) is in agreement with theoretical predictions for all samples.",
keywords = "quantum corrections to conductivity, superconductor-insulator transition, two-dimensional superconductor, INELASTIC-SCATTERING, ALUMINUM FILMS, DEPENDENCE, FLUCTUATION, TRANSITION, TRANSPORT, WEAK-LOCALIZATION, TEMPERATURE, RESISTANCE, PARAMETER",
author = "Mironov, {A. Yu} and Postolova, {S. V.} and Baturina, {T. I.}",
year = "2018",
month = nov,
day = "12",
doi = "10.1088/1361-648X/aae870",
language = "English",
volume = "30",
pages = "485601",
journal = "Journal of Physics Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd.",
number = "48",

}

RIS

TY - JOUR

T1 - Quantum contributions to the magnetoconductivity of critically disordered superconducting TiN films

AU - Mironov, A. Yu

AU - Postolova, S. V.

AU - Baturina, T. I.

PY - 2018/11/12

Y1 - 2018/11/12

N2 - The onset of superconductivity in the presence of disorder is a fundamental problem of condensed matter physics. Here we investigate the magnetoconductance of disordered (8 > kFl > 1.8) superconducting TiN films above the critical temperature Tc. We show that the magnetoconductivity of moderately disordered films with kFl > 5 is in full agreement with the perturbative theory of quantum contributions to conductivity. We demonstrate that the magnetoconductivity of films with kFl ≲ 5 is also in agreement with the perturbative theory down to temperatures T ≈ 2Tc . The quantitative discrepancy between experiment and theory develops only below temperatures T - 2Tc for films with kFl ≈ 5. This discrepancy can be eliminated if we assume steeper temperature dependence of the Larkin's electron'electron attraction strength, Β(T/Tc). The obtained temperature dependence of electron phase breaking time τ (T/Tc) is in agreement with theoretical predictions for all samples.

AB - The onset of superconductivity in the presence of disorder is a fundamental problem of condensed matter physics. Here we investigate the magnetoconductance of disordered (8 > kFl > 1.8) superconducting TiN films above the critical temperature Tc. We show that the magnetoconductivity of moderately disordered films with kFl > 5 is in full agreement with the perturbative theory of quantum contributions to conductivity. We demonstrate that the magnetoconductivity of films with kFl ≲ 5 is also in agreement with the perturbative theory down to temperatures T ≈ 2Tc . The quantitative discrepancy between experiment and theory develops only below temperatures T - 2Tc for films with kFl ≈ 5. This discrepancy can be eliminated if we assume steeper temperature dependence of the Larkin's electron'electron attraction strength, Β(T/Tc). The obtained temperature dependence of electron phase breaking time τ (T/Tc) is in agreement with theoretical predictions for all samples.

KW - quantum corrections to conductivity

KW - superconductor-insulator transition

KW - two-dimensional superconductor

KW - INELASTIC-SCATTERING

KW - ALUMINUM FILMS

KW - DEPENDENCE

KW - FLUCTUATION

KW - TRANSITION

KW - TRANSPORT

KW - WEAK-LOCALIZATION

KW - TEMPERATURE

KW - RESISTANCE

KW - PARAMETER

UR - http://www.scopus.com/inward/record.url?scp=85056502987&partnerID=8YFLogxK

U2 - 10.1088/1361-648X/aae870

DO - 10.1088/1361-648X/aae870

M3 - Article

C2 - 30418946

AN - SCOPUS:85056502987

VL - 30

SP - 485601

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

SN - 0953-8984

IS - 48

M1 - 485601

ER -

ID: 17472868