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Title: Intertwined Orders in Heavy-Fermion Superconductor CeCoIn 5

The appearance of spin-density-wave (SDW) magnetic order in the low-temperature and high-field corner of the superconducting phase diagram of CeCoIn 5 is unique among unconventional superconductors. The nature of this magnetic $Q$ phase is a matter of current debate. Here, we present the thermal conductivity of CeCoIn 5 in a rotating magnetic field, which reveals the presence of an additional order inside the $Q$ phase that is intimately intertwined with the superconducting d-wave and SDW orders. A discontinuous change of the thermal conductivity within the $Q$ phase, when the magnetic field is rotated about antinodes of the superconducting d-wave order parameter, demands that the additional order must change abruptly, together with the recently observed switching of the SDW. Lastly, a combination of interactions, where spin-orbit coupling orients the SDW, which then selects the secondary p -wave pair-density-wave component (with an average amplitude of 20% of the primary d-wave order parameter), accounts for the observed behavior.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Paul Scherrer Inst., Villigen (Switzerland). Lab. for Scientific Developments & Novel Materials
Publication Date:
Report Number(s):
LA-UR-16-23084
Journal ID: ISSN 2160-3308; PRXHAE; TRN: US1701116
Grant/Contract Number:
AC52-06NA25396
Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 6; Journal Issue: 4; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (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:
1336887
Alternate Identifier(s):
OSTI ID: 1340929

Kim, Duk Young, Lin, Shi-Zeng, Weickert, Franziska, Kenzelmann, Michel, Bauer, Eric Dietzgen, Ronning, Filip, Thompson, Joe David, and Movshovich, Roman. Intertwined Orders in Heavy-Fermion Superconductor CeCoIn5. United States: N. p., Web. doi:10.1103/PhysRevX.6.041059.
Kim, Duk Young, Lin, Shi-Zeng, Weickert, Franziska, Kenzelmann, Michel, Bauer, Eric Dietzgen, Ronning, Filip, Thompson, Joe David, & Movshovich, Roman. Intertwined Orders in Heavy-Fermion Superconductor CeCoIn5. United States. doi:10.1103/PhysRevX.6.041059.
Kim, Duk Young, Lin, Shi-Zeng, Weickert, Franziska, Kenzelmann, Michel, Bauer, Eric Dietzgen, Ronning, Filip, Thompson, Joe David, and Movshovich, Roman. 2016. "Intertwined Orders in Heavy-Fermion Superconductor CeCoIn5". United States. doi:10.1103/PhysRevX.6.041059.
@article{osti_1336887,
title = {Intertwined Orders in Heavy-Fermion Superconductor CeCoIn5},
author = {Kim, Duk Young and Lin, Shi-Zeng and Weickert, Franziska and Kenzelmann, Michel and Bauer, Eric Dietzgen and Ronning, Filip and Thompson, Joe David and Movshovich, Roman},
abstractNote = {The appearance of spin-density-wave (SDW) magnetic order in the low-temperature and high-field corner of the superconducting phase diagram of CeCoIn5 is unique among unconventional superconductors. The nature of this magnetic $Q$ phase is a matter of current debate. Here, we present the thermal conductivity of CeCoIn5 in a rotating magnetic field, which reveals the presence of an additional order inside the $Q$ phase that is intimately intertwined with the superconducting d-wave and SDW orders. A discontinuous change of the thermal conductivity within the $Q$ phase, when the magnetic field is rotated about antinodes of the superconducting d-wave order parameter, demands that the additional order must change abruptly, together with the recently observed switching of the SDW. Lastly, a combination of interactions, where spin-orbit coupling orients the SDW, which then selects the secondary p -wave pair-density-wave component (with an average amplitude of 20% of the primary d-wave order parameter), accounts for the observed behavior.},
doi = {10.1103/PhysRevX.6.041059},
journal = {Physical Review. X},
number = 4,
volume = 6,
place = {United States},
year = {2016},
month = {12}
}