Mesoscopic valley filter in graphene Corbino disk containing a p-n junction

@article{Suszalski2019MesoscopicVF,
  title={Mesoscopic valley filter in graphene Corbino disk containing a p-n junction},
  author={Dominik Suszalski and G. Rut and A. Rycerz},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2019}
}
The Corbino geometry allows one to investigate the propagation of electric current along a p-n interface in ballistic graphene in the absence of edge states appearing for the familiar Hall-bar geometry. Using the transfer matrix in the angular-momentum space we find that for sufficiently strong magnetic fields the current propagates only in one direction, determined by the magnetic field direction and the interface orientation, and the two valleys, K and K', are equally occupied. Spatially… Expand
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