Paramagnetically induced gapful topological superconductors

  title={Paramagnetically induced gapful topological superconductors},
  author={Akito Daido and Youichi Yanase},
  journal={Physical Review B},
We propose a generic scenario for realizing gapful topological superconductors (TSCs) from gapless spin-singlet superconductors (SCs). Noncentrosymmetric nodal SCs in two dimensions are shown to be gapful under a Zeeman field, as a result of the cooperation of inversion-symmetry breaking and time-reversal-symmetry breaking. In particular, non-$s$-wave SCs acquire a large excitation gap. Such paramagnetically induced gapful SCs may be classified into TSCs in the symmetry class D specified by the… Expand

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