Superconducting States of Pure and Doped Graphene
Abstract
We study the superconducting phases of the two-dimensional honeycomb lattice of graphene. We find two spin singlet pairing states; s wave and an exotic p+ip that is possible because of the special structure of the honeycomb lattice. At half filling, the p+ip phase is gapless and superconductivity is a hidden order. We discuss the possibility of a superconducting state in metal coated graphene.
- Publication:
-
Physical Review Letters
- Pub Date:
- April 2007
- DOI:
- arXiv:
- arXiv:cond-mat/0608515
- Bibcode:
- 2007PhRvL..98n6801U
- Keywords:
-
- 81.05.Uw;
- 74.25.Dw;
- 74.78.-w;
- Carbon diamond graphite;
- Superconductivity phase diagrams;
- Superconducting films and low-dimensional structures;
- Condensed Matter - Superconductivity;
- Condensed Matter - Materials Science
- E-Print:
- 4 pages, 6 figures