Vortex Core States in Superconducting Graphene

Details Vortex Core States in Superconducting Graphene Vortex Core States in Superconducting Graphene

2008-12-19

arxiv.org/abs/0812.3798v3

Phys. Rev. B 79, 224506 (2009)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.79.224506

The distinctive features of the electronic structure of vortex states in superconducting graphene are studied within the Bogolubov-de Gennes theory applied to excitations near the Dirac point. We suggest a scenario describing the subgap spectrum transformation which occurs with a change in the doping level. For an arbitrary vorticity and doping level we investigate the problem of existence of zero energy modes. The crossover to a Caroli - de Gennes - Matricon type of spectrum is studied.

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