Topological confinement in graphene bilayer quantum rings

Details Topological confinement in graphene bilayer quantum rings Topological confinement in graphene bilayer quantum rings

2010-03-17

arxiv.org/abs/1003.3429v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We demonstrate the existence of localized electron and hole states in a ring-shaped potential kink in biased bilayer graphene. Within the continuum description, we show that for sharp potential steps the Dirac equation describing carrier states close to the K (or K') point of the first Brillouin zone can be solved analytically for a circular kink/anti-kink dot. The solutions exhibit interfacial states which exhibit Aharonov-Bohm oscillations as functions of the height of the potential step and/or the radius of the ring.

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