Correlation-induced triplet superconductivity on the graphene lattice

Peyman Sahebsara; David Senechal

Correlation-induced triplet superconductivity on the graphene lattice

Superconductivity 2009-08-05 v1 Strongly Correlated Electrons

Authors: Peyman Sahebsara , David Senechal

Abstract

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.

Keywords

graphene lattice triplet superconductivity Hubbard model variational cluster approximation f-wave pairing p-wave pairing time-reversal symmetry breaking

Cite

@article{arxiv.0908.0474,
  title  = {Correlation-induced triplet superconductivity on the graphene lattice},
  author = {Peyman Sahebsara and David Senechal},
  journal= {arXiv preprint arXiv:0908.0474},
  year   = {2009}
}

Comments

4 pages, 4 figures (pdflatex)

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