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Magnetic field induced confinement–deconfinement transition in graphene quantum dots

By G. Giavaras, P.A. Maksym and Mervyn Roy


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. A dot design suitable for this experiment is presented.Pre-prin

Publisher: Institute of Physics (IOP)
Year: 2009
DOI identifier: 10.1088/0953-8984
OAI identifier:

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