Enhanced Superconductivity and Rashba Effect in a Buckled Plumbene-Au Kagome Superstructure.
Adv Sci (Weinh)
; 10(17): e2300845, 2023 06.
Article
en En
| MEDLINE
| ID: mdl-37132589
ABSTRACT
Plumbene, with a structure similar to graphene, is expected to possess a strong spin-orbit coupling and thus enhances its superconducting critical temperature (Tc ). In this work, a buckled plumbene-Au Kagome superstructure grown by depositing Au on Pb(111) is investigated. The superconducting gap monitored by temperature-dependent scanning tunneling microscopy/spectroscopy shows that the buckled plumbene-Au Kagome superstructure not only has an enhanced Tc with respect to that of a monolayer Pb but also possesses a higher value than what owned by a bulk Pb substrate. By combining angle-resolved photoemission spectroscopy with density functional theory, the monolayer Au-intercalated low-buckled plumbene sandwiched between the top Au Kagome layer and the bottom Pb(111) substrate is confirmed and the electron-phonon coupling-enhanced superconductivity is revealed. This work demonstrates that a buckled plumbene-Au Kagome superstructure can enhance superconducting Tc and Rashba effect, effectively triggering the novel properties of a plumbene.
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Banco de datos:
MEDLINE
Idioma:
En
Revista:
Adv Sci (Weinh)
Año:
2023
Tipo del documento:
Article
País de afiliación:
Taiwán