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arXiv 0910.0696cond-mat.supr-concond-mat.mes-hall
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二维时间反演对称超导体的波函数拓扑

Wavefunction topology of two-dimensional time-reversal symmetric superconductors

S. -K. Yip

摘要:

讨论了二维时间反演对称超导体波函数的拓扑结构。我们考虑(a)平面态,(b)上下反射对称性破缺的系统,和(c)具有一般自旋-轨道相互作用的系统。我们明确地显示了两个费米表面上的序参量的相对符号如何影响这种拓扑结构,并阐明了这些拓扑状态的$Z_2$分类的意义。

英文摘要:

We discuss the topology of the wavefunctions of two-dimensional time-reversal symmetric superconductors. We consider (a) the planar state, (b) a system with broken up-down reflection symmetry, and (c) a system with general spin-orbit interaction. We show explicitly how the relative sign of the order parameter on the two Fermi surfaces affects this topology, and clarify the meaning of the $Z_2$ classification for these topological states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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