Magnetic field induced confinement-deconfinement transition in graphene quantum dots.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Journal of physics. Condensed matter : an Institute of Physics journal
دوره 21 10 شماره
صفحات -
تاریخ انتشار 2009