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arXiv · 1412.5713

Surface states around a vortex in topological superconductors: Intersection of a surface and a vortex

Yuki Nagai·Hiroki Nakamura·Masahiko Machida
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Abstract

We numerically show that the zero-energy Majorana surface states are suppressed around a vortex in the three-dimensional topological superconductors such as Cu$_{x}$Bi$_{2}$Se$_{3}$ and Sn$_{1-x}$In$_{x}$Te. On the other hand, the zero-energy Majorana bound states along the vortex line are robust against cut by the surface. The suppression of the surface bound states is similar to that with a magnetic impurity on the surface of the topological insulator. The suppression of the surface-bound states around a vortex can be observed as the unconventional energy dependence of imaging of the scanning tunneling microscopy/spectroscopy.

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Yuki Nagai, Hiroki Nakamura, Masahiko Machida. 2015-01-13. Surface states around a vortex in topological superconductors: Intersection of a surface and a vortex. https://doi.org/10.7566/jpsj.84.033703

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