Non-Destructive Low-Temperature Contacts to MoS<sub>2</sub> Nanoribbon and Nanotube Quantum Dots.
basic_science · Level V
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- Record sourced from PubMed, PMID 36624967.
- Also identified by DOI 10.1002/adma.202209333.
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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.