Fock-Darwin states of dirac electrons in graphene-based artificial atoms

We investigate the Fock-Darwin states of the massless chiral fermions confined in a graphitic parabolic quantum dot. In light of Klein tunneling, we analyze the condition for confinement of the Dirac fermions in a cylindrically symmetric potential. New features of the energy levels of the Dirac elec...

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Bibliographic Details
Published inPhysical review letters Vol. 98; no. 18; p. 186803
Main Authors Chen, Hong-Yi, Apalkov, Vadim, Chakraborty, Tapash
Format Journal Article
LanguageEnglish
Published United States 04.05.2007
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Summary:We investigate the Fock-Darwin states of the massless chiral fermions confined in a graphitic parabolic quantum dot. In light of Klein tunneling, we analyze the condition for confinement of the Dirac fermions in a cylindrically symmetric potential. New features of the energy levels of the Dirac electrons as compared to the conventional electronic systems are discussed. We also evaluate the dipole-allowed transitions in the energy levels of the dots. We propose that in the high magnetic field limit, the band parameters can be accurately determined from the dipole-allowed transitions.
ISSN:0031-9007
DOI:10.1103/physrevlett.98.186803