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Title: Superconductivity, Pairing Symmetry, and Disorder in the Doped Topological Insulator Sn 1-xIn xTe for x >= 0.10.

Abstract

The temperature dependence of the London penetration depth Delta lambda(T) in the superconducting doped topological crystalline insulator Sn1-xInxTe was measured down to 450 mK for two different doping levels, x approximate to 0.45 (optimally doped) and x approximate to 0.10 (underdoped), bookending the range of cubic phase in the compound. The results indicate no deviation from fully gapped BCS-like behavior, eliminating several candidate unconventional gap structures. Critical field values below 1 K and other superconducting parameters are also presented. The introduction of disorder by repeated particle irradiation with 5 MeV protons does not enhance T-c, indicating that ferroelectric interactions do not compete with superconductivity.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; USDOE Office of Science - Energy Frontier Research Center - Center for Emergent Superconductivity
OSTI Identifier:
1425287
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 0163-1829
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Smylie, M. P., Claus, H., Kwok, W. -K., Louden, E. R., Eskildsen, M. R., Sefat, A. S., Zhong, R. D., Schneeloch, J., Gu, G. D., Bokari, E., Niraula, P. M., Kayani, A., Dewhurst, C. D., Snezhko, A., and Welp, U. Superconductivity, Pairing Symmetry, and Disorder in the Doped Topological Insulator Sn1-xInxTe for x >= 0.10.. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.024511.
Smylie, M. P., Claus, H., Kwok, W. -K., Louden, E. R., Eskildsen, M. R., Sefat, A. S., Zhong, R. D., Schneeloch, J., Gu, G. D., Bokari, E., Niraula, P. M., Kayani, A., Dewhurst, C. D., Snezhko, A., & Welp, U. Superconductivity, Pairing Symmetry, and Disorder in the Doped Topological Insulator Sn1-xInxTe for x >= 0.10.. United States. doi:10.1103/PhysRevB.97.024511.
Smylie, M. P., Claus, H., Kwok, W. -K., Louden, E. R., Eskildsen, M. R., Sefat, A. S., Zhong, R. D., Schneeloch, J., Gu, G. D., Bokari, E., Niraula, P. M., Kayani, A., Dewhurst, C. D., Snezhko, A., and Welp, U. Fri . "Superconductivity, Pairing Symmetry, and Disorder in the Doped Topological Insulator Sn1-xInxTe for x >= 0.10.". United States. doi:10.1103/PhysRevB.97.024511.
@article{osti_1425287,
title = {Superconductivity, Pairing Symmetry, and Disorder in the Doped Topological Insulator Sn1-xInxTe for x >= 0.10.},
author = {Smylie, M. P. and Claus, H. and Kwok, W. -K. and Louden, E. R. and Eskildsen, M. R. and Sefat, A. S. and Zhong, R. D. and Schneeloch, J. and Gu, G. D. and Bokari, E. and Niraula, P. M. and Kayani, A. and Dewhurst, C. D. and Snezhko, A. and Welp, U.},
abstractNote = {The temperature dependence of the London penetration depth Delta lambda(T) in the superconducting doped topological crystalline insulator Sn1-xInxTe was measured down to 450 mK for two different doping levels, x approximate to 0.45 (optimally doped) and x approximate to 0.10 (underdoped), bookending the range of cubic phase in the compound. The results indicate no deviation from fully gapped BCS-like behavior, eliminating several candidate unconventional gap structures. Critical field values below 1 K and other superconducting parameters are also presented. The introduction of disorder by repeated particle irradiation with 5 MeV protons does not enhance T-c, indicating that ferroelectric interactions do not compete with superconductivity.},
doi = {10.1103/PhysRevB.97.024511},
journal = {Physical Review, B: Condensed Matter},
issn = {0163-1829},
number = 2,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}

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