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Guillemette J, Sabri SS, Wu B, et al. Quantum Hall effect in hydrogenated graphene. Phys Rev Lett. 2013;110(17):176801doi: 10.1103/PhysRevLett.110.176801.
Guillemette, J., Sabri, S. S., Wu, B., Bennaceur, K., Gaskell, P. E., Savard, M., Lévesque, P. L., Mahvash, F., Guermoune, A., Siaj, M., Martel, R., Szkopek, T., & Gervais, G. (2013). Quantum Hall effect in hydrogenated graphene. Physical review letters, 110(17), 176801. https://doi.org/10.1103/PhysRevLett.110.176801
Guillemette, J, et al. "Quantum Hall effect in hydrogenated graphene." Physical review letters vol. 110,17 (2013): 176801. doi: https://doi.org/10.1103/PhysRevLett.110.176801
Guillemette J, Sabri SS, Wu B, Bennaceur K, Gaskell PE, Savard M, Lévesque PL, Mahvash F, Guermoune A, Siaj M, Martel R, Szkopek T, Gervais G. Quantum Hall effect in hydrogenated graphene. Phys Rev Lett. 2013 Apr 26;110(17):176801. doi: 10.1103/PhysRevLett.110.176801. Epub 2013 Apr 22. PMID: 23679754.
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Phys Rev Lett. 2013 Apr 26;110(17):176801. doi: 10.1103/PhysRevLett.110.176801. Epub 2013 Apr 22.

Quantum Hall effect in hydrogenated graphene.

Physical review letters

J Guillemette, S S Sabri, Binxin Wu, K Bennaceur, P E Gaskell, M Savard, P L Lévesque, F Mahvash, A Guermoune, M Siaj, R Martel, T Szkopek, G Gervais

Affiliations

  1. Department of Physics, McGill University, Montréal, Quebec, H3A 2T8, Canada.

PMID: 23679754 DOI: 10.1103/PhysRevLett.110.176801

Abstract

The quantum Hall effect is observed in a two-dimensional electron gas formed in millimeter-scale hydrogenated graphene, with a mobility less than 10  cm2/V·s and corresponding Ioffe-Regel disorder parameter (k(F)λ)(-1) ≫ 1. In a zero magnetic field and low temperatures, the hydrogenated graphene is insulating with a two-point resistance of the order of 250h/e2. The application of a strong magnetic field generates a negative colossal magnetoresistance, with the two-point resistance saturating within 0.5% of h/2e2 at 45 T. Our observations are consistent with the opening of an impurity-induced gap in the density of states of graphene. The interplay between electron localization by defect scattering and magnetic confinement in two-dimensional atomic crystals is discussed.

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