Kekule versus hidden superconducting order in graphene-like systems : Competition and coexistence

@inproceedings{Kunst2015KekuleVH,
  title={Kekule versus hidden superconducting order in graphene-like systems : Competition and coexistence},
  author={Flore K. Kunst and Christophe Delerue and Cristiane de Morais Smith and Vladimir Juri{\vc}i{\'c}},
  year={2015}
}
We theoretically study the competition between two possible exotic superconducting orders that may occur in graphene-like systems, assuming dominant nearest-neighbor attraction: the gapless hidden superconducting order, which renormalizes the Fermi velocity, and the Kekule order, which opens a superconducting gap. We perform an analysis within the mean-field theory for Dirac electrons, at finite-temperature and finite chemical potential, as well as at half filling and zero-temperature, first… CONTINUE READING