Robust zero-energy bound states around a pair-density-wave vortex core in locally noncentrosymmetric superconductors

  title={Robust zero-energy bound states around a pair-density-wave vortex core in locally noncentrosymmetric superconductors},
  author={Yoichi Higashi and Yuki Nagai and Tomohiro Yoshida and Yusuke Masaki and Youichi Yanase},
  journal={Physical Review B},
We numerically investigate the electronic structures around a vortex core in a bilayer superconducting system, with s-wave pairing, Rashba spin-orbit coupling and Zeeman magnetic field, with use of the quasiclassical Green's function method. The Bardeen-Cooper-Schrieffer (BCS) phase and the so-called pair-density wave (PDW) phase appear in the temperature-magnetic-field phase diagram in a bulk uniform system [Phys. Rev. B 86, 134514 (2012)]. In the low magnetic field perpendicular to the layers… 
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