Szczegóły publikacji
Opis bibliograficzny
Manipulating quantum Hall edge channels in graphene through scanning gate microscopy / Lennart Bours, Stefano Guiducci, Alina MREŃCA-KOLASIŃSKA, Bartłomiej SZAFRAN, Jan C. Maan, Stefan Heun // Physical Review. B ; ISSN 2469-9950. — Tytuł poprz.: Physical Review B, Condensed Matter and Materials Physics ; ISSN: 1098-0121. — 2017 — vol. 96 iss. 19 art. no. 195423, s. 195423-1–195423-10. — Bibliogr. s. 195423-9–195423-10
Autorzy (6)
- Bours Lennart
- Guiducci Stefano
- AGHMreńca-Kolasińska Alina
- AGHSzafran Bartłomiej
- Maan Jan C.
- Heun Stefan
Dane bibliometryczne
| ID BaDAP | 110637 |
|---|---|
| Data dodania do BaDAP | 2017-12-08 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.96.195423 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We show evidence of the backscattering of quantum Hall edge channels in a narrow graphene Hall bar, induced by the gating effect of the conducting tip of a scanning gate microscope, which we can position with nanometer precision. We show full control over the edge channels and are able, because of the spatial variation of the tip potential, to separate copropagating edge channels in the Hall bar, creating junctions between regions of different charge carrier density, that have not been observed in devices based on top or split gates. The solution of the corresponding quantum scattering problem is presented to substantiate these results, and possible follow-up experiments are discussed.
