24 citations · 105 across the 9 of their papers we have counts for
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Topological gap states of semiconducting armchair graphene ribbons
Y. H. Jeong, S. C. Kim, S. -R. Eric Yang
In semiconducting armchair graphene ribbons a chiral lattice deformation can induce pairs of topological gap states with opposite energies. Near the critical value of the deformati…
Impurity cyclotron resonance of anomalous Dirac electrons in graphene
S. C. Kim, S. -R. Eric Yang, A. H. MacDonald
We have investigated a new feature of impurity cyclotron resonances common to various localized potentials of graphene. A localized potential can interact with a magnetic field in…
Coulomb impurity problem of graphene in magnetic fields
S. C. Kim, S. -R. Eric Yang
Analytical solutions of the Coulomb impurity problem of graphene in the absence of a magnetic field show that when the dimensionless strength of the Coulomb potential reaches a…
Resonant, non-resonant, and anomalous states of Dirac electrons in a parabolic well in the presence of magnetic fields
S. C. Kim, J. W. Lee, S. -R. Eric Yang
We report on several new basic properties of a parabolic dot in the presence of a magnetic field. The ratio between the potential strength and the Landau level (LL) energy spacing…
Comment on "Fock-Darwin States of Dirac Electrons in Graphene-Based Artificial Atoms"
P. S. Park, S. C. Kim, S. -R. Eric Yang
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 e…
Scaling properties of induced density of chiral and non-chiral Dirac fermions in magnetic fields
P. S. Park, S. C. Kim, S. -R. Eric Yang
We find that a repulsive potential of graphene in the presence of a magnetic field has bound states that are peaked inside the barrier with tails extending over \ell(N + 1), where…
Electronic properties of a graphene antidot in magnetic fields
P. S. Park, S. C. Kim, S. -R. Eric Yang
We report on several unusual properties of a graphene antidot created by a piecewise constant potential in a magnetic field. We find that the total probability of finding the elect…
States near Dirac points of rectangular graphene dot in a magnetic field
S. C. Kim, P. S. Park, S. -R. Eric Yang
In neutral graphene dots the Fermi level coincides with the Dirac points. We have investigated in the presence of a magnetic field several unusual properties of single electron sta…
Effect of many-body quantum fluctuations on matrix Berry phases of a two-dimensional n-type semiconductor quantum dot
S. C. Kim, Y. J. Kim, P. S. Park +2
In the presence of spin-orbit coupling and inversion symmetry of the lateral confinement potential a single electron does not exhibit matrix Berry phases in quasi-two-dimensional s…