Landau-level splitting in graphene in high magnetic fields.

@article{Zhang2006LandaulevelSI,
  title={Landau-level splitting in graphene in high magnetic fields.},
  author={Yunshang Zhang and Z. Jiang and Joshua P. Small and Meninder S. Purewal and Y.-W. Tan and Mina Fazlollahi and Joel D. Chudow and John A Jaszczak and Horst L. Stormer and Philip Kim},
  journal={Physical review letters},
  year={2006},
  volume={96 13},
  pages={
          136806
        }
}
The quantum Hall (QH) effect in two-dimensional electrons and holes in high quality graphene samples is studied in strong magnetic fields up to 45 T. QH plateaus at filling factors nu = 0, +/-1, +/-4 are discovered at magnetic fields B > 20 T, indicating the lifting of the fourfold degeneracy of the previously observed QH states at nu = +/-4(absolute value(n) + 1/2), where n is the Landau-level index. In particular, the presence of the nu = 0, +/-1 QH plateaus indicates that the Landau level at… Expand
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