Details

Autor(en) / Beteiligte

• Sajadi, Ebrahim
• Palomaki, Tauno
• Fei, Zaiyao
• Zhao, Wenjin
• Bement, Philip
• Olsen, Christian
• Luescher, Silvia
• Xu, Xiaodong
• Folk, Joshua A
• Cobden, David H

Titel

Gate-induced superconductivity in a monolayer topological insulator

Ist Teil von

• Science (American Association for the Advancement of Science), 2018-11, Vol.362 (6417), p.922-925

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2018

Link zum Volltext

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• The layered semimetal tungsten ditelluride (WTe ) has recently been found to be a two-dimensional topological insulator (2D TI) when thinned down to a single monolayer, with conducting helical edge channels. We found that intrinsic superconductivity can be induced in this monolayer 2D TI by mild electrostatic doping at temperatures below 1 kelvin. The 2D TI-superconductor transition can be driven by applying a small gate voltage. This discovery offers possibilities for gate-controlled devices combining superconductivity and nontrivial topological properties, and could provide a basis for quantum information schemes based on topological protection.