Observation of a Majorana zero mode in a topologically protected edge channel
- Authors
- Jack, Berthold; Xie, Yonglong; Li, Jian; Jeon, Sangjun; Bernevig, B. Andrei; Yazdani, Ali
- Issue Date
- Jun-2019
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE, v.364, no.6447, pp 1255 - +
- Journal Title
- SCIENCE
- Volume
- 364
- Number
- 6447
- Start Page
- 1255
- End Page
- +
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/32859
- DOI
- 10.1126/science.aax1444
- ISSN
- 0036-8075
1095-9203
- Abstract
- Superconducting proximity pairing in helical edge modes, such as those of topological insulators, is predicted to provide a unique platform for realizing Majorana zero modes (MZMs). We used scanning tunneling microscopy measurements to probe the influence of proximity-induced superconductivity and magnetism on the helical hinge states of bismuth(111) films grown on a superconducting niobium substrate and decorated with magnetic iron clusters. Consistent with model calculations, our measurements revealed the emergence of a localized MZM at the interface between the superconducting helical edge channel and the iron clusters, with a strong magnetization component along the edge. Our experiments also resolve the MZM's spin signature, which distinguishes it from trivial in-gap states that may accidentally occur at zero energy in a superconductor.
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- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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