Time-Resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41985882.
- Also identified by DOI 10.1021/acs.nanolett.5c06351 and PMC identifier 13133897.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
We investigate electronic transport through gate-defined quantum dots in molybdenum disulfide (MoS<sub>2</sub>) using an integrated charge detector. We observe a crossover from two weakly coupled single dots to a strongly coupled double quantum dot. In the regime of extremely weak dot-lead coupling, where the direct transport current is below the detection limit, we measure the dot occupation via charge detection and access the few-electron regime. Due to the large band gap of MoS<sub>2</sub>, tunneling rates can be sufficiently suppressed to resolve individual tunneling events. These results establish a platform for single-shot spin- and valley-to-charge conversion and highlight the potential of transition-metal dichalcogenide quantum dots for quantum information applications.