title: Fock-Darwin states of dirac electrons in graphene-based artificial atoms.
abstract: 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.
authors.affiliation: Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
authors.forename: Hong-Yi
authors.initials: HY
authors.lastname: Chen
authors.forename: Vadim
authors.initials: V
authors.lastname: Apalkov
authors.forename: Tapash
authors.initials: T
authors.lastname: Chakraborty