First Direct Observation of a Nearly Ideal Graphene Band Structure

M. Sprinkle, D. Siegel, Y. Hu, J. Hicks, A. Tejeda, A. Taleb-Ibrahimi, P. Le Fèvre, F. Bertran, S. Vizzini, H. Enriquez, S. Chiang, P. Soukiassian, C. Berger, W. A. de Heer, A. Lanzara, and E. H. Conrad

Phys. Rev. Lett. 103, 226803 – Published 24 November 2009

Abstract

Angle-resolved photoemission and x-ray diffraction experiments show that multilayer epitaxial graphene grown on the $SiC (000 \bar{1})$ surface is a new form of carbon that is composed of effectively isolated graphene sheets. The unique rotational stacking of these films causes adjacent graphene layers to electronically decouple leading to a set of nearly independent linearly dispersing bands (Dirac cones) at the graphene $K$ point. Each cone corresponds to an individual macroscale graphene sheet in a multilayer stack where $A B$ -stacked sheets can be considered as low density faults.

Received 29 July 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.226803

Authors & Affiliations

M. Sprinkle¹, D. Siegel², Y. Hu¹, J. Hicks¹, A. Tejeda^3,4, A. Taleb-Ibrahimi⁵, P. Le Fèvre⁴, F. Bertran⁴, S. Vizzini^6,7, H. Enriquez^6,7, S. Chiang^6,8, P. Soukiassian^6,7, C. Berger^1,9, W. A. de Heer¹, A. Lanzara², and E. H. Conrad¹

¹The Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA
²Department of Physics, University of California, Berkeley, California 94720, USA and Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
³Institut Jean Lamour, CNRS–Université de Nancy–UPV-Metz, 54506 Vandoeuvre les Nancy, France
⁴Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, 91192 Gif sur Yvette, France
⁵UR1 CNRS/Synchrotron SOLEIL, Saint-Aubin, 91192 Gif sur Yvette, France
⁶Commissariatà l’Energie Atomique, SIMA, DSM-IRAMIS-SPCSI, Saclay, 91191 Gif sur Yvette, France
⁷Département de Physique, Université de Paris-Sud, 91405 Orsay, France
⁸Department of Physics, University of California-Davis, California 95616-8677, USA
⁹CNRS/Institut Néel, BP166, 38042 Grenoble, France

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 103, Iss. 22 — 27 November 2009

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review Letters