期刊
SCIENCE
卷 364, 期 6447, 页码 1255-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aax1444
关键词
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资金
- Gordon and Betty Moore Foundation as part of the EPiQS initiative [GBMF4530]
- NSF-MRSEC programs through the Princeton Center for Complex Materials [DMR-1420541, NSF-DMR-1608848]
- Alexander von Humboldt Foundation through a Feodor-Lynen postdoctoral fellowship
- DOE [de-sc0016239]
- NSF EAGER [1643312]
- Simons Investigator Grants
- ARO MURI [W911NF-12-1-0461]
- Packard Foundation
- Schmidt Fund for Innovative Research
- National Natural Science Foundation of China [11774317]
- [ONR-N00014-17-1-2784]
- [ONR-N00014-14-1-0330]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1643312] Funding Source: National Science Foundation
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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