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Energy Levels of Graphene Magnetic Circular Quantum Dot
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Energy Levels of Graphene Magnetic Circular Quantum Dot
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We study the energy levels of graphene magnetic circular quantum dot surrounded by an infinite graphene sheet in the presence of an electrostatic potential. We solve Dirac equation to derive the solutions of energy spectrum associated with different regions composing our system. Using the continuum model and applying boundary conditions at the interface, we obtain analytical results for the energy levels. The dependence of the energy levels on the quantum dot radius, magnetic field and electrostatic potential is analyzed for the two valleys $K$ and $K'$. We show that the energy levels exhibit characteristics of interface states and have an energy gap.
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