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Type: Artigo de periódico
Title: Dirac and normal fermions in graphite and graphene: Implications of the quantum hall effect
Author: Luk'yanchuk, IA
Kopelevich, Y
Abstract: Spectral analysis of the Shubnikov-de Haas magnetoresistance oscillations and the 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 QHEs for bilayer and single-layer graphenes take place simultaneously in HOPG samples.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.97.256801
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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