Magnetic field induced confinement-deconfinement transition in graphene quantum dots

Abstract

Massless Dirac particles cannot be confined by an electrostatic potential. This is a problem for making graphene quantum dots but confinement can be achieved with a magnetic field and here, general conditions for confined and deconfined states are derived. There is a class of potentials for which the character of the state can be controlled at will. Then a confinement-deconfinement transition occurs which allows the Klein paradox to be probed experimentally in graphene dots.

4 pages, 4 figres

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• Bound state properties of ABC-stacked trilayer graphene quantum dots
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