Quantum Hall activation gaps in bilayer graphene

Kurganova, E. V.; Giesbers, A. J. M.; Gorbachev, R. V.; Geim, A. K.; Novoselov, K. S.; Maan, J. C.; Zeitler, U.

doi:10.1016/j.ssc.2010.09.042

arXiv 2010-09-28 DOI 10.1016/j.ssc.2010.09.042 0 views

Quantum Hall activation gaps in bilayer graphene

Kurganova, E. V. · Giesbers, A. J. M. · Gorbachev, R. V. · Geim, A. K. · Novoselov, K. S. · Maan, J. C. · Zeitler, U.

Mesoscale and Nanoscale Physics

Original · EN

We have measured the quantum Hall activation gaps in bilayer graphene at filling factors ν=±4 and ν=±8 in high magnetic fields up to 30 T. We find that energy levels can be described by a 4-band relativistic hyperbolic dispersion. The Landau level width is found to contain a field independent background due to an intrinsic level broadening and a component which increases linearly with magnetic field.

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