4.6 Article

Artificial atoms in interacting graphene quantum dots

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PHYSICAL REVIEW B
卷 80, 期 16, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.161402

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  1. DFG [SFB TR/12]
  2. ESF

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We describe the theory of few Coulomb-correlated electrons in a magnetic quantum dot formed in graphene. While the corresponding nonrelativistic (Schrodinger) problem is well understood, a naive generalization to graphene's relativistic (Dirac-Weyl) spectrum encounters divergencies and is ill defined. We employ Sucher's projection formalism to overcome these problems. Exact diagonalization results for the two-electron quantum dot, i.e., the artificial helium atom in graphene, are presented.

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