Temperature-Dependent Thz Conductivity Of Graphene

S. Massabeau, M. Baillergeau,C. Berger,W. De Heer, S. Dhillon, J. Tignon,L. A. De Vaulchier, R. Ferreira, J. Mangeney

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2016）

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Abstract

We investigate the conductivity of epitaxial multilayer graphene in the THz range at various temperatures using time-domain THz spectroscopy. We demonstrate an increase of the THz conductivity as the temperature is increased, indicating Fermi energy of quasi-neutral layers close to the Dirac point. We also highlight phonon-assisted conduction at high temperature.

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Key words

temperature-dependent THz conductivity,epitaxial multilayer graphene,time-domain THz spectroscopy,Fermi energy,quasineutral layers,Dirac point,phonon-assisted conduction,C

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