Fine structure of the local pseudogap and Fano effect for superconducting electrons near a zigzag graphene edge
Abstract
Description
Motivated by recent scanning tunneling experiments on zigzag-terminated graphene this paper investigates an interplay of evanescent and extended quasiparticle states in the local density of states (LDOS) near a zigzag edge using the Green's function of the Dirac equation. A model system is considered where the local electronic structure near the edge influences transport of both normal and superconducting electrons via a Fano resonance. In particular, the temperature enhancement of the critical Josephson current and 0-pi transitions are predicted.
5 pages, 5 figures, to be published in Phys. Rev. B
5 pages, 5 figures, to be published in Phys. Rev. B