Topological superconductor in quasi-one-dimensional Tl[subscript 2 − x]Mo[subscript 6]Se[subscript 6]
Author(s)
Huang, Shin-Ming; Hsu, Chuang-Han; Lee, Chi-Cheng; Shiau, Shiue-Yuan; Lin, Hsin; Bansil, Arun; Xu, Suyang; ... Show more Show less
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We propose that the quasi-one-dimensional molybdenum selenide compound Tl[subscript 2−x]Mo[subscript 6]Se[subscript 6] is a time-reversal-invariant topological superconductor induced by intersublattice pairing, even in the absence of spin-orbit coupling (SOC). No noticeable change in superconductivity is observed in Tl-deficient (0≤x≤0.1) compounds. At weak SOC, the superconductor prefers the triplet d vector lying perpendicular to the chain direction and two-dimensional E[subscript 2u] symmetry, which is driven to a nematic order by spontaneous rotation symmetry breaking. The locking energy of the d vector is estimated to be weak and hence the proof of its direction would rely on tunneling or phase-sensitive measurements.
Date issued
2018-01Department
Massachusetts Institute of Technology. Department of Physics; MIT Materials Research LaboratoryJournal
Physical Review B
Publisher
American Physical Society
Citation
Huang, Shin-Ming, et al. “Topological Superconductor in Quasi-One-Dimensional Tl[subscript 2 − x]Mo[subscript 6]Se[subscript 6].” Physical Review B, vol. 97, no. 1, Jan. 2018. © 2018 American Physical Society
Version: Final published version
ISSN
2469-9950
2469-9969