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arXiv 1001.2571cond-mat.supr-concond-mat.mes-hall
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超导涡旋核中的拓扑Majorana和Dirac零模

Topological Majorana and Dirac zero modes in superconducting vortex cores

Rahul Roy

摘要:

我们提供了一个参数的磁通插入的基础上表明,某些超导体与非平凡的拓扑不变的保护零模式在其涡核。这个论点具有二维指数定理的味道,也适用于无序系统。这也为理解无自旋$p_{x} + i p_{y}$超导体涡旋核中的零模提供了一种新的途径。将这种方法应用于具有和不具有时间反转和自旋旋转对称性的超导体,我们预测了其涡旋中存在受保护零模的充要条件。

英文摘要:

We provide an argument based on flux insertion to show that certain superconductors with a non-trivial topological invariant have protected zero modes in their vortex cores. This argument has the flavor of a two dimensional index theorem and applies to disordered systems as well. It also provides a new way of understanding the zero modes in the vortex cores of a spinless $p_{x} + i p_{y}$ superconductor. Applying this approach to superconductors with and without time reversal and spin rotational symmetry, we predict the necessary and sufficient conditions for protected zero modes to exist in their vortices.

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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