Author/Authors :
Shimoi، نويسنده , , Yukihiro and Yamaji، نويسنده , , Kunihiko and Yanagisawa، نويسنده , , Takashi، نويسنده ,
Abstract :
The two-chain and two-dimensional Hubbard models are studied using the exact diagonalization method. The features of superconductivity with non-simple s-wave symmetry are obtained and can be explained by the two-band mechanism. Our results are considered to be relevant to organic superconductors as well as high Tc oxides.
