1202.2694 (Mir Vahid Hosseini et al.)

Model of an exotic chiral superconducting phase in a graphene bilayer    [PDF]

Mir Vahid Hosseini, Malek Zareyan

We theoretically demonstrate the formation of a new type of unconventional
superconductivity in graphene materials, which exhibits gapless property. The
studied superconductivity is based on an interlayer pairing of chiral electrons
in bilayer graphene, which results in an exotic s-wave spin-triplet condensate
order with anomalous thermodynamic properties. These include the possibility of
a temperature induced condensation causing an increase of the pairing gap with
increasing temperature, and an entropy of the stable superconducting state
which can be higher than its value in the normal state. Our study reveals the
analogy of the interlayer superconductivity in graphene materials to the color
superconductivity in dense quark matter and the gapless pairing states in
nuclear matter and ultra-cold atomic gases.

View original: http://arxiv.org/abs/1202.2694