A circular p-p junction in graphene confines Dirac fermions into whispering-gallery modes, shows a Berry-phase-induced level jump under magnetic field, and exhibits a split quasi-bound state near the Fermi level.
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Scanning tunneling microscope characterizations of a circular graphene resonator realized with p-p junctions
A circular p-p junction in graphene confines Dirac fermions into whispering-gallery modes, shows a Berry-phase-induced level jump under magnetic field, and exhibits a split quasi-bound state near the Fermi level.