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Type: Artigo de periódico
Title: Absence of metal-insulator transition and coherent interlayer transport in oriented graphite in parallel magnetic fields
Author: Kempa, H
Semmelhack, HC
Esquinazi, P
Kopelevich, Y
Abstract: Measurements of the magnetoresistivity of graphite with a high degree of control of the angle between the sample and magnetic field indicate that the metal-insulator transition, shown to be induced by a magnetic field applied perpendicular to the layers, does not appear in parallel field orientation. Furthermore, we show that interlayer transport is coherent in less ordered samples and high magnetic fields, whereas appears to be incoherent in less disordered samples. Our results demonstrate the two-dimensionality of the electron system in ideal graphite samples. (C) 2002 Elsevier Science Ltd. All rights reserved.
Subject: graphite
phase transitions
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/S0038-1098(02)00711-1
Date Issue: 2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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