期刊
PHYSICAL REVIEW B
卷 87, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.035426
关键词
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资金
- Flemish Science Foundation (FWO-VI)
- European Science Foundation (ESF)
- EUROCORES program EuroGRAPHENE (project CONGRAN)
- Brazilian agency CNPq (Pronex)
- bilateral projects between Flanders and Brazil
- collaboration project FWO-CNPq
We investigate the magnetic interface states of graphene quantum dots that contain p-n junctions. Within a tight-binding approach, we consider rectangular quantum dots in the presence of a perpendicular magnetic field containing p-n as well as p-n-p and n-p-n junctions. The results show the interplay between the edge states associated with the zigzag terminations of the sample and the snake states that arise at the p-n junction due to the overlap between electron and hole states at the potential interface. Remarkable localized states are found at the crossing of the p-n junction with the zigzag edge having a dumb-bell-shaped electron distribution. The results are presented as a function of the junction parameters and the applied magnetic flux. DOI: 10.1103/PhysRevB.87.035426
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