论文标题
具有较强电子电子吸引力的位点的稀释系统中的超导性
Superconductivity in dilute system of sites with strong electron-electron attraction
论文作者
论文摘要
我们考虑了强电子电子吸引力对负U-中心稀释系统中超导性的影响。他们将电子状态与电动状态相结合，并介导电子之间的吸引力。我们预测当地库珀对所提供的吸引力的形成超过了一定的阈值。全球一致的超导状态仅是由于低温下中心之间的Andreev散射。计算超导转变温度和第二个临界磁场对吸引力强度的依赖性。
We consider the effect of strong electron-electron attraction on superconductivity in the dilute system of the negative U-centers. They couple to the conducting electronic states and mediate attraction between electrons. We predict the formation of the local Cooper pairs provided attraction exceeds a certain threshold value. The global coherent superconducting state appears only due to the Andreev scattering between the centers at low temperatures. The dependence of the superconducting transition temperature and the second critical magnetic field on attraction strength is calculated.
