论文标题
超导拓扑绝缘子的涡流中Majorana零模式的异常相干长度
Anomalous Coherence Length of Majorana Zero Modes at Vortices in Superconducting Topological Insulators
论文作者
论文摘要
P波拓扑超导体中两个Majorana零能模式的相干长度与超导顺序参数成反比。我们研究了Majorana零模式在涡流中涡流/超导体异质结构中涡流的有限尺寸效应，在存在涡流的情况下，发现涡流线终端的两个零能模式的相干长度独立于超导管订单参数，并且由拓扑绝缘材料确定。这种异常的特性说明，超导拓扑绝缘子在拓扑上是截然不同的，与$ p $ - 波 - 波拓扑超导体相反。
The coherence length of two Majorana zero energy modes in a p-wave topological superconductor is inversely proportional to the superconducting order parameter. We studied the finite size effect of the Majorana zero modes at vortices in a topological insulator/superconductor heterostructure in the presence of a vortex and found that the the coherence length of the two zero energy modes at the terminals of a vortex line is independent of superconducting order parameter, and determined by the intrinsic properties of the topological insulator. This anomalous property illustrates that the superconducting topological insulator is topologically distinct, contrary to a $p$-wave topological superconductor.
