Multiterminal Coulomb-Majorana junction.

  title={Multiterminal Coulomb-Majorana junction.},
  author={Alexander Altland and Reinhold Egger},
  journal={Physical review letters},
  volume={110 19},
We study multiple helical nanowires in proximity to a common mesoscopic superconducting island, where Majorana fermion bound states are formed. We show that a weak finite charging energy of the center island may dramatically affect the low-energy behavior of the system. While for strong charging interactions, the junction decouples the connecting wires, interactions lower than a nonuniversal threshold may trigger the flow towards an exotic Kondo fixed point. In either case, the ideally Andreev… CONTINUE READING