Domain wall in a chiral p-wave superconductor: a pathway for electrical current.

  title={Domain wall in a chiral p-wave superconductor: a pathway for electrical current.},
  author={I. Serban and Benjamin B{\'e}ri and A. Akhmerov and C. W. J. Beenakker},
  journal={Physical review letters},
  volume={104 14},
Superconductors with p(x)+/-ip(y) pairing symmetry are characterized by chiral edge states, but these are difficult to detect in equilibrium since the resulting magnetic field is screened by the Meissner effect. Nonequilibrium detection is hindered by the fact that the edge excitations are Majorana fermions, which cannot transport charge near the Fermi level. Here we show that the boundary between p(x)+ip(y) and p(x)-ip(y) domains forms a one-way channel for electrical charge. We derive a… 

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