论文标题
两波段超导体的边界效应
Boundary effects in two-band superconductors
论文作者
论文摘要
我们介绍了一项微观研究，该研究对两波段超导材料的边界的行为进行了微观研究，该材料由标准的紧密结合Bardeen-Cooper-Schrieffer模型描述。我们发现超导表面状态。散装和表面临界温度之间的相对差异是带间耦合强度的非平凡功能。对于具有弱带间耦合的超导体，边界尽管非零的频带间约瑟夫森耦合，但边界仍会在多个长度尺度的情况下引起间隙的变化。
We present a microscopic study of the behavior of the order parameters near boundaries of a two-band superconducting material, described by the standard tight-binding Bardeen-Cooper-Schrieffer model. We find superconducting surface states. The relative difference between bulk and surface critical temperatures is a nontrivial function of the interband coupling strength. For superconductors with weak interband coupling, boundaries induce variations of the gaps with the presence of multiple length scales, despite non-zero interband Josephson coupling.
