Interface Landau levels in graphene monolayer-bilayer junction

Details Interface Landau levels in graphene monolayer-bilayer junction Interface Landau levels in graphene monolayer-bilayer junction

2010-08-27

arxiv.org/abs/1008.4679v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 9 figures

Scientific paper

Electronic structure of graphene monolayer-bilayer junction in a magnetic field is studied within an effective-mass approximation. The energy spectrum is characterized by interface Landau levels, i.e., the locally flat bands appearing near the boundary region, resulting in a series of characteristic peaks in the local density of states. Their energies are independent of boundary types such as zigzag or armchair. In the atomic scale, the local density of states shows a Kekul\'{e} pattern due to the valley mixing in the armchair boundary, while does not in the zigzag boundary.

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