Magnetic field induced confinement-deconfinement transition in graphene quantum dots

Details Magnetic field induced confinement-deconfinement transition in graphene quantum dots Magnetic field induced confinement-deconfinement transition in graphene quantum dots

2008-05-20

arxiv.org/abs/0805.3055v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figres

Scientific paper

10.1088/0953-8984/21/10/102201

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.

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