Correlation-induced triplet superconductivity on the graphene lattice

Details Correlation-induced triplet superconductivity on the graphene lattice Correlation-induced triplet superconductivity on the graphene lattice

2009-08-04

arxiv.org/abs/0908.0474v1

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures (pdflatex)

Scientific paper

We investigate the possibility of superconductivity on the graphene lattice within the repulsive Hubbard model using the variational cluster approximation (VCA). We find that singlet superconductivity is impossible; instead, triplet superconductivity is favored, with four solutions that are close to each other in energy and differ by their symmetry; one is f-wave, the other three p-wave, including a p+ip solution that breaks time-reversal invariance.

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