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Graphene Rings in Magnetic Fields: Aharonov-Bohm Effect and Valley Splitting

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Wurm, Jürgen ; Wimmer, Michael ; Baranger, H. ; Richter, Klaus
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arXiv PDF (21.04.2009)
Date of publication of this fulltext: 05 Aug 2009 13:58


We study the conductance of mesoscopic graphene rings in the presence of a perpendicular magnetic field by means of numerical calculations based on a tight-binding model. First, we consider the magnetoconductance of such rings and observe the Aharonov-Bohm effect. We investigate different regimes of the magnetic flux up to the quantum Hall regime, where the Aharonov-Bohm oscillations are ...


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