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arXiv · 1201.3436

Comment on "Fock-Darwin States of Dirac Electrons in Graphene-Based Artificial Atoms"

P. S. Park·S. C. Kim·S. -R. Eric Yang
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Abstract

Chen, Apalkov, and Chakraborty (Phys. Rev. Lett. 98, 186803 (2007)) have computed Fock-Darwin levels of a graphene dot by including only basis states with energies larger than or equal to zero. We show that their results violate the Hellman-Feynman theorem. A correct treatment must include both positive and negative energy basis states. Additional basis states lead to new energy levels in the optical spectrum and anticrossings between optical transition lines.

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P. S. Park, S. C. Kim, S. -R. Eric Yang. 2012-01-17. Comment on "Fock-Darwin States of Dirac Electrons in Graphene-Based Artificial Atoms". https://doi.org/10.1103/physrevlett.108.169701

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