期刊
SCIENCE
卷 362, 期 6417, 页码 926-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aar4642
关键词
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资金
- AFOSR [FA9550-16-1-0382]
- Gordon and Betty Moore Foundation's EPiQS Initiative [GBMF4541]
- Center for Excitonics, an Energy Frontier Research Center - DOE, Basic Energy Sciences Office [DE-SC0001088]
- NSF [ECS-0335765, DMR-0819762]
- MIT Pappalardo Fellowship in Physics
- NSF MRSEC grant [DMR-1420541]
- Elemental Strategy Initiative by the MEXT, Japan
- JSPS KAKENHI [JP15K21722, JP25106006]
Turning on superconductivity in a topologically nontrivial insulator may provide a route to search for non-Abelian topological states. However, existing demonstrations of superconductor-insulator switches have involved only topologically trivial systems. Here we report reversible, in situ electrostatic on-off switching of superconductivity in the recently established quantum spin Hall insulator monolayer tungsten ditelluride (WTe2). Fabricated into a van der Waals field-effect transistor, the monolayer's ground state can be continuously gate-tuned from the topological insulating to the superconducting state, with critical temperatures T-c up to similar to 1 kelvin. Our results establish monolayer WTe2 as a material platform for engineering nanodevices that combine superconducting and topological phases of matter.
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