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Title: Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2

Abstract

The interplay between superconductivity and charge-density wave (CDW) in 2H-NbSe2 is not fully understood despite decades of study. Artificially introduced disorder can tip the delicate balance between two competing long-range orders, and reveal the underlying interactions that give rise to them. Here in this paper we introduce disorder by electron irradiation and measure in-plane resistivity, Hall resistivity, X-ray scattering, and London penetration depth. With increasing disorder, the superconducting transition temperature, Tc, varies non-monotonically, whereas the CDW transition temperature, TCDW, monotonically decreases and becomes unresolvable above a critical irradiation dose where Tc drops sharply. Our results imply that the CDW order initially competes with superconductivity, but eventually assists it. We argue that at the transition where the long-range CDW order disappears, the cooperation with superconductivity is dramatically suppressed. X-ray scattering and Hall resistivity measurements reveal that the short-range CDW survives above the transition. Superconductivity persists to much higher dose levels, consistent with fully gapped superconductivity and moderate interband pairing.

Authors:
 [1];  [2];  [1];  [1];  [3];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [4];  [5]; ORCiD logo [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics & Astronomy
  2. Ecole Polytechnique, Palaiseau (France). Laboratoire des Solides Irradiés
  3. Ames Lab., Ames, IA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computer Science and Mathematics Division
  5. Univ. of Florida, Gainesville, FL (United States). Dept. of Physics
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1464471
Report Number(s):
IS-J-9685
Journal ID: ISSN 2041-1723; PII: 5153
Grant/Contract Number:  
AC02-07CH11358; DMR-1407502
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Cho, Kyuil, Kończykowski, M., Teknowijoyo, S., Tanatar, M. A., Guss, J., Gartin, P. B., Wilde, J. M., Kreyssig, A., McQueeney, R. J., Goldman, A. I., Mishra, V., Hirschfeld, P. J., and Prozorov, R. Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2. United States: N. p., 2018. Web. doi:10.1038/s41467-018-05153-0.
Cho, Kyuil, Kończykowski, M., Teknowijoyo, S., Tanatar, M. A., Guss, J., Gartin, P. B., Wilde, J. M., Kreyssig, A., McQueeney, R. J., Goldman, A. I., Mishra, V., Hirschfeld, P. J., & Prozorov, R. Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2. United States. doi:https://doi.org/10.1038/s41467-018-05153-0
Cho, Kyuil, Kończykowski, M., Teknowijoyo, S., Tanatar, M. A., Guss, J., Gartin, P. B., Wilde, J. M., Kreyssig, A., McQueeney, R. J., Goldman, A. I., Mishra, V., Hirschfeld, P. J., and Prozorov, R. Wed . "Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2". United States. doi:https://doi.org/10.1038/s41467-018-05153-0. https://www.osti.gov/servlets/purl/1464471.
@article{osti_1464471,
title = {Using controlled disorder to probe the interplay between charge order and superconductivity in NbSe2},
author = {Cho, Kyuil and Kończykowski, M. and Teknowijoyo, S. and Tanatar, M. A. and Guss, J. and Gartin, P. B. and Wilde, J. M. and Kreyssig, A. and McQueeney, R. J. and Goldman, A. I. and Mishra, V. and Hirschfeld, P. J. and Prozorov, R.},
abstractNote = {The interplay between superconductivity and charge-density wave (CDW) in 2H-NbSe2 is not fully understood despite decades of study. Artificially introduced disorder can tip the delicate balance between two competing long-range orders, and reveal the underlying interactions that give rise to them. Here in this paper we introduce disorder by electron irradiation and measure in-plane resistivity, Hall resistivity, X-ray scattering, and London penetration depth. With increasing disorder, the superconducting transition temperature, Tc, varies non-monotonically, whereas the CDW transition temperature, TCDW, monotonically decreases and becomes unresolvable above a critical irradiation dose where Tc drops sharply. Our results imply that the CDW order initially competes with superconductivity, but eventually assists it. We argue that at the transition where the long-range CDW order disappears, the cooperation with superconductivity is dramatically suppressed. X-ray scattering and Hall resistivity measurements reveal that the short-range CDW survives above the transition. Superconductivity persists to much higher dose levels, consistent with fully gapped superconductivity and moderate interband pairing.},
doi = {10.1038/s41467-018-05153-0},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {2018},
month = {7}
}

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Cited by: 21 works
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    Works referencing / citing this record:

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