Odd-frequency pairing and proximity effect in Kitaev chain systems including a topological critical point

  title={Odd-frequency pairing and proximity effect in Kitaev chain systems including a topological critical point},
  author={D. Takagi and S. Tamura and Yukio Tanaka},
  journal={Physical Review B},
In this paper, we investigate the relation between odd-frequency pairing and proximity effect in nonuniform Kitaev chain systems with a particular interest in the topological critical point. First, we correlate the odd-frequency pairing and Majorana fermion in a semi-infinite Kitaev chain, where we find that the spatial dependence of the odd-frequency pair amplitude coincides with that of the local density of states at low frequencies. Second, we demonstrate that, contrary to the standard view… Expand
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