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Title: Superconductor–Insulator Transition in NbTiN Films

Abstract

Experimental results indicating a direct disorder-induced superconductor-insulator transition in NbTiN thin films have been reported. It has been shown that an increase in the resistance per square in the normal state is accompanied by the suppression of the critical temperature of the superconducting transition T c according to the fermion mechanism of suppression of superconductivity by disorder. At the same time, the temperature of the Berezinskii-Kosterlitz-Thouless transition is completely suppressed at a nonzero critical temperature and, then, the ground state changes to insulating, which is characteristic of the boson model of suppression of superconductivity by disorder. Furthermore it has been shown that the temperature dependences of the resistance of insulating films follow the Arrhenius activation law.

Authors:
 [1];  [1];  [1];  [2];  [3];  [1]
  1. Russian Academy of Sciences, Novosibirsk (Russia); Novosibirsk State Univ., Novosibirsk (Russia)
  2. Institut de recherches sur les lois fundamentales de l’univers, Gif-sur-Yvette (France); Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Russian Science Foundation; USDOE
OSTI Identifier:
1461412
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
JETP Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 11; Journal ID: ISSN 0021-3640
Publisher:
Pleiades Publishing - Springer Nature
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Burdastyh, M. V., Postolova, S. V., Baturina, T. I., Proslier, T., Vinokur, V. M., and Mironov, A. Yu. Superconductor–Insulator Transition in NbTiN Films. United States: N. p., 2018. Web. doi:10.1134/S0021364017230060.
Burdastyh, M. V., Postolova, S. V., Baturina, T. I., Proslier, T., Vinokur, V. M., & Mironov, A. Yu. Superconductor–Insulator Transition in NbTiN Films. United States. doi:10.1134/S0021364017230060.
Burdastyh, M. V., Postolova, S. V., Baturina, T. I., Proslier, T., Vinokur, V. M., and Mironov, A. Yu. Thu . "Superconductor–Insulator Transition in NbTiN Films". United States. doi:10.1134/S0021364017230060. https://www.osti.gov/servlets/purl/1461412.
@article{osti_1461412,
title = {Superconductor–Insulator Transition in NbTiN Films},
author = {Burdastyh, M. V. and Postolova, S. V. and Baturina, T. I. and Proslier, T. and Vinokur, V. M. and Mironov, A. Yu.},
abstractNote = {Experimental results indicating a direct disorder-induced superconductor-insulator transition in NbTiN thin films have been reported. It has been shown that an increase in the resistance per square in the normal state is accompanied by the suppression of the critical temperature of the superconducting transition Tc according to the fermion mechanism of suppression of superconductivity by disorder. At the same time, the temperature of the Berezinskii-Kosterlitz-Thouless transition is completely suppressed at a nonzero critical temperature and, then, the ground state changes to insulating, which is characteristic of the boson model of suppression of superconductivity by disorder. Furthermore it has been shown that the temperature dependences of the resistance of insulating films follow the Arrhenius activation law.},
doi = {10.1134/S0021364017230060},
journal = {JETP Letters},
number = 11,
volume = 106,
place = {United States},
year = {2018},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Fig. 1 Fig. 1: (a) Image of the cross section in a high-resolution transmission electron microscope. (b) Diffraction pattern.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.