Matches in SemOpenAlex for { <https://semopenalex.org/work/W4284966658> ?p ?o ?g. }
- W4284966658 abstract "The importance of controlling both the charge carrier density and the band gap of a semiconductor cannot be overstated, as it opens the doors to a wide range of applications, including, e.g., highly-tunable transistors, photodetectors, and lasers. Bernal-stacked bilayer graphene is a unique van-der-Waals material that allows tuning the band gap by an out-of-plane electric field. Although the first evidence of the tunable gap was already found ten years ago, it took until recent to fabricate sufficiently clean heterostructures where the electrically induced gap could be used to fully suppress transport or confine charge carriers. Here, we present a detailed study of the tunable band gap in gated bilayer graphene characterized by temperature-activated transport and finite-bias spectroscopy measurements. The latter method allows comparing different gate materials and device technologies, which directly affects the disorder potential in bilayer graphene. We show that graphite-gated bilayer graphene exhibits extremely low disorder and as good as no subgap states resulting in ultraclean tunable band gaps up to 120 meV. The size of the band gaps are in good agreement with theory and allow complete current suppression making a wide range of semiconductor applications possible." @default.
- W4284966658 created "2022-07-10" @default.
- W4284966658 creator A5001060363 @default.
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- W4284966658 date "2022-07-27" @default.
- W4284966658 modified "2023-10-14" @default.
- W4284966658 title "Transport Spectroscopy of Ultraclean Tunable Band Gaps in Bilayer Graphene" @default.
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