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Type: Artigo de periódico
Title: Possible superconductivity in multi-layer-graphene by application of a gate voltage
Author: Ballestar, A
Esquinazi, P
Barzola-Quiquia, J
Dusari, S
Bern, F
da Silva, RR
Kopelevich, Y
Abstract: The carrier density in tens of nanometers thick graphite samples (multi-layer-graphene, MLG) has been modified by applying a gate voltage (V-g) perpendicular to the graphene planes. Surface potential microscopy shows inhomogeneities in the carrier density (n) in the sample near surface region and under different values of V-g at room temperature. Transport measurements on different MLG samples reveal that under a large enough applied electric field these regions undergo a superconducting-like transition at T less than or similar to 17K. A magnetic field applied parallel or normal to the graphene layers suppresses the transition without changing appreciably the transition temperature. (C) 2014 Elsevier Ltd. All rights reserved.
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.carbon.2014.02.011
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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