title: Electronic properties of a graphene antidot in magnetic fields.
abstract: 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 electron in the barrier can be nearly one while it is almost zero outside the barrier. In addition, for each electron state of a graphene antidot there is a dot state with exactly the same wavefunction but with a different energy. This symmetry is a consequence of Klein tunneling of Dirac electrons. Moreover, in zigzag nanoribbons we find strong coupling between some antidot states and zigzag edge states. Experimental tests of these effects are proposed.
authors.affiliation: Physics Department, Korea University, Seoul, Korea.
authors.forename: P S
authors.initials: PS
authors.lastname: Park
authors.forename: S C
authors.initials: SC
authors.lastname: Kim
authors.forename: S-R Eric
authors.initials: SR
authors.lastname: Yang
mesh_terms: D002244:Carbon / Q000737:chemistry; D004574:Electromagnetic Fields; D004581:Electronics / Q000295:instrumentation*; D004583:Electrons; D006108:Graphite / Q000737:chemistry*; D008280:Magnetics; D008956:Models, Chemical; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011789:Quantum Theory; D013499:Surface Properties
chemical_list: D037742:Nanotubes, Carbon; D002244:Carbon; D006108:Graphite