论文标题
玻色子交换超导体中配对相关和库仑相关的相互作用
Interplay of Pairing Correlation and Coulomb Correlation in Boson Exchange Superconductors
论文作者
论文摘要
已经开发了一种探索常规的Bardeen-Cooper-Schrieffer（BCS）配对不稳定性的理论方法，从相关的正常相位，对于所有可能的多体性相关程度，都已经开发出了超导性。使用具有相关参数的Gutzwiller投影方案用于生成BCS配对状态。此后实施了一个变分方案，从而导致了超导间隙函数的自洽方程。该方程式显示了间隙函数对许多身体相关参数的明确依赖性。这种“配对差距”和相应的零相关性限制中相应的自洽差距方程在本质上与纯的（1-well）BCS形式主义的性质相同，与预期和库仑相关性与相关强度显着影响配对。详细的后果正在这里提出。
A theoretical methodology for exploring the conventional Bardeen-Cooper-Schrieffer (BCS) pairing instability for superconductivity from a correlated normal phase for all possible degrees of many-body correlation, has been developed. The Gutzwiller projection scheme with a correlation parameter was made use of in generating the BCS pairing state. A variational scheme was thereafter implemented, leading to a self-consistent equation for superconducting gap function. This equation shows explicit dependence of the gap function on the many body correlation parameter. This `pairing-gap' and the corresponding self-consistent gap equation in zero correlation limit, becomes identical in nature with those of the pure (1-well) BCS formalism, as expected and the Coulomb correlation affects the pairing significantly with the strength of correlation. The detailed consequences are being presented here.
