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.
Feixiang Xiang, Abhay Gupta, Andrey Chaves, Z. E. Krix, Kenji Watanabe, Takashi Taniguchi, Michael S. Fuhrer, F. M. Peeters, D. Neilson, M. V. Miloševıć, A. R. Hamilton
Alexandre Assouline, Taige Wang, Haoxin Zhou, Liam Cohen, Fangyuan Yang, Ruining Zhang, Takashi Taniguchi, Kenji Watanabe, Roger S. K. Mong, Michael P. Zaletel, Andrea F. Young
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