Relativistic Model of two-band Superconductivity in (2+1)-dimension
  We investigate the relativistic model of superconductivity in (2+1)-dimension. We employ the massless Gross-Neveu model at finite temperature and density, to study the superconductivity and superconducting instability. Our investigation is related to the superconductivity in (2+1)-dimensional two-band systems like ${\rm MgB_{2}}$ or intercalated graphite. 
Tadafumi Ohsaku