Superconductivity in the two-band Hubbard model

Koga, Akihisa; Werner, Philipp

doi:10.1103/PhysRevB.91.085108

Back

Journal article

Superconductivity in the two-band Hubbard model

Koga, Akihisa Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
Werner, Philipp Department of Physics, University of Fribourg, Switzerland

12.02.2015

Published in:

Physical Review B. - 2015, vol. 91, no. 8, p. 085108

English We study the two-band Hubbard model in infinite dimensions by solving the dynamical mean-field equations with a strong coupling continuous-time quantum Monte Carlo method and show that an s-wave superconducting state can be stabilized in the repulsively interacting case. We discuss how this superconducting state competes with the metallic and paired Mott states. The effects of the Hund coupling and crystalline electric field are also addressed.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

Language