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Title: Thermal conductivity of nonunitary triplet superconductors: application to UTe2
Considerable evidence shows that the heavy fermion material UTe2is a spin-triplet superconductor, possibly manifesting time-reversal symmetry breaking, as measured by Kerr effect below the critical temperature, in some samples. Such signals can arise due to a chiral orbital state or possible nonunitary pairing. Although experiments at low temperatures appear to be consistent with point nodes in the spectral gap, the detailed form of the order parameter and even the nodal positions are not yet determined. Thermal conductivity measurements can extend to quite low temperatures, and varying the heat current direction should be able to provide information on the order parameter structure. Here, we derive a general expression for the thermal conductivity of a spin-triplet superconductor and use it to compare the low-temperature behavior of various states proposed for UTe2.  more » « less
Award ID(s):
2231821
PAR ID:
10548555
Author(s) / Creator(s):
; ;
Publisher / Repository:
ArXiv
Date Published:
Journal Name:
Frontiers in Physics
Volume:
12
ISSN:
2296-424X
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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