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Dirac and Normal Fermions in Graphite and Graphene: Implications to the Quantum Hall Effect

Igor A. Luk'yanchuk·Yakov Kopelevich
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Abstract

Spectral analysis of Shubnikov de Haas (SdH) oscillations of magnetoresistance and of Quantum Hall Effect (QHE) measured in quasi-2D highly oriented pyrolytic graphite (HOPG) [Phys. Rev. Lett. 90, 156402 (2003)] reveals two types of carriers: normal (massive) electrons with Berry phase 0 and Dirac-like (massless) holes with Berry phase pi. We demonstrate that recently reported integer- and semi-integer QHE for bi-layer and single-layer graphenes take place simultaneously in HOPG samples.

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Igor A. Luk'yanchuk, Yakov Kopelevich. 2007-01-12. Dirac and Normal Fermions in Graphite and Graphene: Implications to the Quantum Hall Effect. https://doi.org/10.1103/physrevlett.97.256801

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