Fine structure of the local pseudogap and Fano effect for superconducting electrons near a zigzag graphene edge
arXiv:0707.3048 · doi:10.1103/PhysRevB.76.235409
Abstract
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
References in corpus (13)
- Electronic States of Graphene Nanoribbons
- Unconventional Integer Quantum Hall effect in graphene
- Veselago Lens for Electrons: Focusing and Caustics in Graphene p-n Junctions
- Quantum-limited shot noise in graphene
- Quantum Hall Ferromagnetism in Graphene
- Specular Andreev reflection in graphene
- Supercurrent reversal in quantum dots
- Edge state on hydrogen-terminated graphite edges investigated by scanning tunneling microscopy
- Effect of Disorder on Transport in Graphene
- Josephson effect in ballistic graphene
- Tuning the conductance of a molecular switch
- Fano effect in a ring-dot system with tunable coupling
- Effect of magnetic pair breaking on Andreev bound states and resonant supercurrent in quantum dot Josephson junctions
Cited by in corpus (5)
- Andreev reflection and Klein tunneling in graphene
- Andreev reflection in graphene nanoribbons
- Microscopic theory of the proximity effect in superconductor-graphene nanostructures
- Dirac fermion quantization on graphene edges: Isospin-orbit coupling, zero modes and spontaneous valley polarization
- Boundary-induced violation of the Dirac fermion parity and its signatures in local and global tunneling spectra of graphene