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

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.

4 pages

References in corpus (4)

• Unconventional Integer Quantum Hall effect in graphene
• Phase analysis of quantum oscillations in graphite
• Two Dimensional Electron and Hole Gases at the Surface of Graphite
• Low energy excitations in graphite: The role of dimensionality and lattice defects

Cited by in corpus (9)

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• Planar QED at finite temperature and density: Hall conductivity, Berry's phases and minimal conductivity of graphene
• Dirac Fermions in Graphite: the State of Art
• Magneto-transmission as a probe of Dirac fermions in bulk graphite
• The quantum Hall effect in graphene samples and the relativistic Dirac effective action
• Quantum Hall effect in graphene: A functional determinant approach
• Phases of the Dirac determinant, Abelian Chern-Simons terms and Berry's phases in the field theoretic description of graphene