Full superconducting dome of strong Ising protection in gated monolayer WS2

Jianming Lu, Oleksandr Zheliuk, Qihong Chen, Inge Leermakers, Nigel E. Hussey, Uli Zeitler, Jianting Ye*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

58 Citaten (Scopus)

Samenvatting

Many recent studies show that superconductivity not only exists in atomically thin monolayers but can exhibit enhanced properties such as a higher transition temperature and a stronger critical field. Nevertheless, besides being unstable in air, the weak tunability in these intrinsically metallic monolayers has limited the exploration of monolayer superconductivity, hindering their potential in electronic applications (e.g., superconductor-semiconductor hybrid devices). Here we show that using field effect gating, we can induce superconductivity in monolayer WS2 grown by chemical vapor deposition, a typical ambient-stable semiconducting transition metal dichalcogenide (TMD), and we are able to access a complete set of competing electronic phases over an unprecedented doping range from band insulator, superconductor, to a reentrant insulator at high doping. Throughout the superconducting dome, the Cooper pair spin is pinned by a strong internal spin-orbit interaction, making this material arguably the most resilient superconductor in the external magnetic field. The reentrant insulating state at positive high gating voltages is attributed to localization induced by the characteristically weak screening of the monolayer, providing insight into many dome-like superconducting phases observed in field-induced quasi-2D superconductors.

Originele taal-2English
Pagina's (van-tot)3551-3556
Aantal pagina's6
TijdschriftProceedings of the National Academy of Sciences of the United States of America
Volume115
Nummer van het tijdschrift14
DOI's
StatusPublished - 3-apr-2018

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