4.6 Article

Analytic model of the energy spectrum of a graphene quantum dot in a perpendicular magnetic field

期刊

PHYSICAL REVIEW B
卷 78, 期 19, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.195427

关键词

carbon; interface states; nanostructured materials; quantum dots

资金

  1. ETH Zurich
  2. 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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