Dirac Fermions and Conductance Oscillations in s- and d-Wave Superconductor-Graphene Junctions
J. Linder, A. Sudbø
DOI 10.1103/PhysRevLett.99.147001 · Physical Review Letters
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Abstract
We investigate quantum transport in a normal-superconductor graphene heterostructure, including the possibility of an anisotropic pairing potential in the superconducting region. We find that under certain circumstances, the conductance displays an undamped, oscillatory behavior as a function of applied bias voltage. Also, we investigate how the conductance spectra are affected by a d-wave pairing symmetry. These results combine unusual features of the electronic structure of graphene with the unconventional pairing symmetry found for instance in high-Tc superconductors.
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