Topological superconductor in quasi-one-dimensional Tl[subscript 2 − x]Mo[subscript 6]Se[subscript 6]
Name
PhysRevB.97.014510.pdf
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1.17 MB
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Adobe PDF
Checksum (MD5)
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Author(s)
Huang, Shin-Ming
Hsu, Chuang-Han
Lee, Chi-Cheng
Shiau, Shiue-Yuan
Lin, Hsin
Bansil, Arun
Xu, Suyang
Date Issued
January 2018
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Materials Research Laboratory
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.97.014510
