Topological superconductor in quasi-one-dimensional Tl<sub>2−x</sub>Mo<sub>6</sub>Se<sub>6</sub>

ORAL

Abstract

Search for topological superconductors would be the most attractive subject among all the topological materials in part because the Majorana fermions they allow at boundaries are of potential applications in quantum computation. In this work, we propose that the quasi-one-dimensional molybdenum selenide compound Tl2−xMo6Se6 is a time-reversal-invariant topological superconductor induced by inter-sublattice pairing. Weak spin-orbit coupling will pin the triplet d vector lying perpendicular to the chain direction and results in the two-dimensional E2u superconductivity with a concurrent nematic order. We estimate the locking energy of the d vector to be weak and hence the proof of its direction would rely on tunnelling or phase-sensitive measurements.

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Presenters

  • Shin-Ming Huang

    • National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University
    • National Sun Yat-Sen University
    • National Sun Yat-Sen U.
    • Department of Physics, National Sun Yat-Sen University
    • Physic, Natl Sun Yat Sen Univ
    • Physics, Natl Sun Yat Sen Univ

Authors

  • Shin-Ming Huang

    • National Sun Yat-sen University
    • Department of Physics, National Sun Yat-sen University
    • National Sun Yat-Sen University
    • National Sun Yat-Sen U.
    • Department of Physics, National Sun Yat-Sen University
    • Physic, Natl Sun Yat Sen Univ
    • Physics, Natl Sun Yat Sen Univ

  • Chuang-Han Hsu

    • Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
    • National U. of Singapore

  • Suyang Xu

    • MIT
    • Department of Physics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology
    • Princeton University
    • Princeton U.
    • Massachusetts Inst of Tech-MIT

  • Chi-Cheng Lee

    • Institute for Solid State Physics, The University of Tokyo

  • Shiue-Yuan Shiau

    • Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
    • Physics, National Cheng Kung University

  • Hsin Lin

    • Academia Sinica
    • National University of Singapore
    • Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
    • Institute of Physics, Academica Sinica
    • Institute of Physics, Academia Sinica
    • National U. of Singapore
    • Natl Univ of Singapore
    • National University of Signapore

  • Arun Bansil

    • Physics, Northeastern University
    • Department of Physics, Northeastern University
    • Northeastern University
    • Physics, Northeastern Univ