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Majorana Zero Mode Detected with Spin Selective Andreev Reflection in the Vortex of a Topological Superconductor

Author(s)
Sun, Hao-Hua; Zhang, Kai-Wen; Hu, Lun-Hui; Li, Chuang; Wang, Guan-Yong; Ma, Hai-Yang; Xu, Zhu-An; Gao, Chun-Lei; Guan, Dan-Dan; Li, Yao-Yi; Liu, Canhua; Qian, Dong; Zhou, Yi; Fu, Liang; Li, Shao-Chun; Zhang, Fu-Chun; Jia, Jin-Feng; ... Show more Show less
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Abstract
Recently, theory has predicted a Majorana zero mode (MZM) to induce spin selective Andreev reflection (SSAR), a novel magnetic property which can be used to detect the MZM. Here, spin-polarized scanning tunneling microscopy or spectroscopy has been applied to probe SSAR of MZMs in a topological superconductor of the Bi[subscript 2]Tep[subscript 3]/NbSe[subscript 2] heterostructure. The zero-bias peak of the tunneling differential conductance at the vortex center is observed substantially higher when the tip polarization and the external magnetic field are parallel rather than antiparallel to each other. This spin dependent tunneling effect provides direct evidence of MZM and reveals its magnetic property in addition to the zero energy modes. Our work will stimulate MZM research on these novel physical properties and, hence, is a step towards experimental study of their statistics and application in quantum computing.
Date issued
2016-06
URI
http://hdl.handle.net/1721.1/110526
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Sun, Hao-Hua et al. “Majorana Zero Mode Detected with Spin Selective Andreev Reflection in the Vortex of a Topological Superconductor.” Physical Review Letters 116.25 (2016): n. pag. © 2016 American Physical Society
Version: Final published version

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