带间作用与超导转变温度

Superconducting transition temperature with interband interaction

用格林函数方法研究d p模型 ,表明带间电子 电子作用Udp导致超导并提升超导转变温度 ,而在位电子 电子作用Ud 降低超导转变温度 .由于带间作用 。

The d-p model is studied using Green functions. It is shown that the interband interaction U-dp can lead to superconductivity and raising the critical temperature, but the local electron-electron interaction U-d decreases the transition temperature. We also argue that the interband interaction could make both the normal states and superconducting states show non-Fermi-liquid behaviours.