Journal
PHYSICAL REVIEW B
Volume 78, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.195427
Keywords
carbon; interface states; nanostructured materials; quantum dots
Funding
- ETH Zurich
- Swiss Science Foundation
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We analytically calculate the energy spectrum of a circular graphene quantum dot with radius R subjected to a perpendicular magnetic field B by applying the infinite-mass boundary condition. We can retrieve well-known limits for the cases R,B ->infinity and B -> 0. Our model is capable of capturing the essential details of recent experiments. Quantitative agreement between theory and experiment is limited due to the fact that a circular dot deviates from the actual experimental geometry, that disorder plays a significant role, and that interaction effects may be relevant.
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