Surface States around a Vortex in Topological Superconductors: Intersection of a Surface and a Vortex

2014/12/31 by Yuki Nagai, Hiroki Nakamura, Masahiko Machida
Physics and Astronomy · #Advanced Condensed Matter Physics #Quantum many-body systems #Topological Materials and Phenomena #cond-mat.supr-con

paper · pdf · doi:10.7566/jpsj.84.033703

published as J. Phys. Soc. Jpn. 84, 033703 (2015) · 4 pages, 4 figures, Accepted for publication in J. Phys. Soc. Jpn

arxiv created 2015/01/13 · openalex publication_date 2015/02/05 · arxiv updated 2015/02/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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_xBi₂Se₃ and Sn_1-xIn_xTe. 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.

Citations

• Classification of topological insulators and superconductors in three spatial dimensions
• Topological Insulators with Inversion Symmetry
• Teoria simmetrica dell’elettrone e del positrone
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Vortex structure in chiralp-wave superconductors
• Topological Insulators