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Title: Superconducting phase transitions in disordered NbTiN films

Abstract

Suppression of superconductivity in disordered systems is a fundamental problem of condensed matter physics. Here we investigate superconducting niobium-titanium-nitride (Nb 1-xTi xN) thin films grown by the atomic layer deposition (ALD) with slightly different growth process parameters. We observe a smooth crossover from the disorder-driven superconductor-normal metal transition (SMT) to the superconductor-insulator transition (SIT) via the intermediate Bose metal state detected by the low-temperature saturation of the temperature dependence of the sheet resistance. We demonstrate that the SIT via the intervening Bose metal state occurs if the sheet resistance of the film in the maximum, R max prior to the superconducting drop of R(T), exceeds R q = h/4e 2.

Authors:
 [1];  [2]; ORCiD logo [3];  [4];  [4]; ORCiD logo [5]; ORCiD logo [1]
  1. Inst. of Semiconductor Physics, Novosibirsk (Russia); Novosibirsk State Univ. (Russian Federation)
  2. Inst. of Semiconductor Physics, Novosibirsk (Russia); Inst. for Physics of Microstructures (Russia)
  3. Inst. de recherches sur les lois fundamentales de l’univers, Commissariat de l’énergie atomique et aux énergies renouvelables-Saclay, Gif-sur-Yvette (France)
  4. Inst. for Physics of Microstructures (Russia)
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Contributing Org.:
[Russian Foundation for Basic Research]
OSTI Identifier:
1601971
Grant/Contract Number:  
[AC02-06CH11357]
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
[ Journal Volume: 10; Journal Issue: 1]; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English

Citation Formats

Burdastyh, M. V., Postolova, S. V., Proslier, T., Ustavshikov, S. S., Antonov, A. V., Vinokur, V. M., and Mironov, A. Yu. Superconducting phase transitions in disordered NbTiN films. United States: N. p., 2020. Web. doi:10.1038/s41598-020-58192-3.
Burdastyh, M. V., Postolova, S. V., Proslier, T., Ustavshikov, S. S., Antonov, A. V., Vinokur, V. M., & Mironov, A. Yu. Superconducting phase transitions in disordered NbTiN films. United States. doi:10.1038/s41598-020-58192-3.
Burdastyh, M. V., Postolova, S. V., Proslier, T., Ustavshikov, S. S., Antonov, A. V., Vinokur, V. M., and Mironov, A. Yu. Thu . "Superconducting phase transitions in disordered NbTiN films". United States. doi:10.1038/s41598-020-58192-3. https://www.osti.gov/servlets/purl/1601971.
@article{osti_1601971,
title = {Superconducting phase transitions in disordered NbTiN films},
author = {Burdastyh, M. V. and Postolova, S. V. and Proslier, T. and Ustavshikov, S. S. and Antonov, A. V. and Vinokur, V. M. and Mironov, A. Yu.},
abstractNote = {Suppression of superconductivity in disordered systems is a fundamental problem of condensed matter physics. Here we investigate superconducting niobium-titanium-nitride (Nb1-xTixN) thin films grown by the atomic layer deposition (ALD) with slightly different growth process parameters. We observe a smooth crossover from the disorder-driven superconductor-normal metal transition (SMT) to the superconductor-insulator transition (SIT) via the intermediate Bose metal state detected by the low-temperature saturation of the temperature dependence of the sheet resistance. We demonstrate that the SIT via the intervening Bose metal state occurs if the sheet resistance of the film in the maximum, Rmax prior to the superconducting drop of R(T), exceeds Rq = h/4e2.},
doi = {10.1038/s41598-020-58192-3},
journal = {Scientific Reports},
number = [1],
volume = [10],
place = {United States},
year = {2020},
month = {1}
}

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