Non-Destructive Low-Temperature Contacts to MoS2 Nanoribbon and Nanotube Quantum Dots.
Adv Mater
; 35(13): e2209333, 2023 Mar.
Article
em En
| MEDLINE
| ID: mdl-36624967
ABSTRACT
Molybdenum disulfide nanoribbons and nanotubes are quasi-1D semiconductors with strong spin-orbit interaction, a nanomaterial highly promising for quantum electronic applications. Here, it is demonstrated that a bismuth semimetal layer between the contact metal and this nanomaterial strongly improves the properties of the contacts. Two-point resistances on the order of 100 kΩ are observed at room temperature. At cryogenic temperature, Coulomb blockade is visible. The resulting stability diagrams indicate a marked absence of trap states at the contacts and the corresponding disorder, compared to previous devices that use low-work-function metals as contacts. Single-level quantum transport is observed at temperatures below 100 mK.
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MEDLINE
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En
Ano de publicação:
2023
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Article