skip to main content

DOE PAGESDOE PAGES

Title: Universal heat conduction in Ce 1-xYb xCoIn 5: Evidence for robust nodal d-wave superconducting gap

In the heavy-fermion superconductor Ce 1-xYb xCoIn 5, Yb doping was reported to cause a possible change from nodal d-wave superconductivity to a fully gapped d-wave molecular superfluid of composite pairs near x ≈ 0.07 (nominal value x nom = 0.2). Here we present systematic thermal conductivity measurements on Ce 1-xYb xCoIn 5 (x = 0.013, 0.084, and 0.163) single crystals. The observed finite residual linear term κ 0/T is insensitive to Yb doping, verifying the universal heat conduction of the nodal d-wave superconducting gap in Ce 1-xYb xCoIn 5. Similar universal heat conduction is also observed in the CeCo(In 1–yCd y) 5 system. Furthermore, these results reveal a robust nodal d-wave gap in CeCoIn 5 upon Yb or Cd doping.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [1] ;  [1] ;  [2] ;  [2] ;  [3] ;  [1] ;  [1]
  1. Fudan Univ., Shanghai (People's Republic of China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of California, San Diego, La Jolla, CA (United States)
Publication Date:
Report Number(s):
BNL-111990-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO; R&D Project: PM016; KC0201050
Grant/Contract Number:
SC00112704; FG02-04-ER46105; AC02-98CH10886
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 6; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1245396
Alternate Identifier(s):
OSTI ID: 1236536

Xu, Y., Petrovic, C., Dong, J. K., Lum, I. K., Zhang, J., Hong, X. C., He, L. P., Wang, K. F., Ma, Y. C., Maple, M. B., Shu, L., and Li, S. Y.. Universal heat conduction in Ce1-xYbxCoIn5: Evidence for robust nodal d-wave superconducting gap. United States: N. p., Web. doi:10.1103/PhysRevB.93.064502.
Xu, Y., Petrovic, C., Dong, J. K., Lum, I. K., Zhang, J., Hong, X. C., He, L. P., Wang, K. F., Ma, Y. C., Maple, M. B., Shu, L., & Li, S. Y.. Universal heat conduction in Ce1-xYbxCoIn5: Evidence for robust nodal d-wave superconducting gap. United States. doi:10.1103/PhysRevB.93.064502.
Xu, Y., Petrovic, C., Dong, J. K., Lum, I. K., Zhang, J., Hong, X. C., He, L. P., Wang, K. F., Ma, Y. C., Maple, M. B., Shu, L., and Li, S. Y.. 2016. "Universal heat conduction in Ce1-xYbxCoIn5: Evidence for robust nodal d-wave superconducting gap". United States. doi:10.1103/PhysRevB.93.064502. https://www.osti.gov/servlets/purl/1245396.
@article{osti_1245396,
title = {Universal heat conduction in Ce1-xYbxCoIn5: Evidence for robust nodal d-wave superconducting gap},
author = {Xu, Y. and Petrovic, C. and Dong, J. K. and Lum, I. K. and Zhang, J. and Hong, X. C. and He, L. P. and Wang, K. F. and Ma, Y. C. and Maple, M. B. and Shu, L. and Li, S. Y.},
abstractNote = {In the heavy-fermion superconductor Ce1-xYbxCoIn5, Yb doping was reported to cause a possible change from nodal d-wave superconductivity to a fully gapped d-wave molecular superfluid of composite pairs near x ≈ 0.07 (nominal value xnom = 0.2). Here we present systematic thermal conductivity measurements on Ce1-xYbxCoIn5 (x = 0.013, 0.084, and 0.163) single crystals. The observed finite residual linear term κ0/T is insensitive to Yb doping, verifying the universal heat conduction of the nodal d-wave superconducting gap in Ce1-xYbxCoIn5. Similar universal heat conduction is also observed in the CeCo(In1–yCdy)5 system. Furthermore, these results reveal a robust nodal d-wave gap in CeCoIn5 upon Yb or Cd doping.},
doi = {10.1103/PhysRevB.93.064502},
journal = {Physical Review B},
number = 6,
volume = 93,
place = {United States},
year = {2016},
month = {2}
}