Electronic Structure of Few-Layer Graphene: Experimental Demonstration of Strong Dependence on Stacking Sequence
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Open Access
- 29 April 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 104 (17), 176404
- https://doi.org/10.1103/physrevlett.104.176404
Abstract
The electronic structure of few-layer graphene (FLG) samples with crystalline order was investigated experimentally by infrared absorption spectroscopy for photon energies ranging from 0.2–1 eV. Distinct optical conductivity spectra were observed for different samples having precisely the same number of layers. The different spectra arise from the existence of two stable polytypes of FLG, namely, Bernal () stacking and rhombohedral () stacking. The observed absorption features, reflecting the underlying symmetry of the two polytypes and the nature of the associated van Hone singularities, were reproduced by explicit calculations within a tight-binding model. The findings demonstrate the pronounced effect of stacking order on the electronic structure of FLG. DOI: http://dx.doi.org/10.1103/PhysRevLett.104.176404 © 2010 The American Physical Society
Keywords
This publication has 33 references indexed in Scilit:
- Graphene: Status and ProspectsScience, 2009
- The electronic properties of grapheneReviews of Modern Physics, 2009
- Optical properties of simple hexagonal and rhombohedral few-layer graphenes in an electric fieldJournal of Applied Physics, 2008
- Electronic properties of stacks of graphene layersSolid State Communications, 2007
- Dependence of band structures on stacking and field in layered grapheneSolid State Communications, 2007
- Electronic Properties of AA- and ABC-Stacked Few-Layer GraphitesJournal of the Physics Society Japan, 2007
- Charge Carriers in Few-Layer Graphene FilmsPhysical Review Letters, 2006
- Electronic states and Landau levels in graphene stacksPhysical Review B, 2006
- Landau-Level Degeneracy and Quantum Hall Effect in a Graphite BilayerPhysical Review Letters, 2006
- Experimental observation of the quantum Hall effect and Berry's phase in grapheneNature, 2005