Nanotech 2011

Uniqueness of intraband plasmon dispersion of a single layer graphene

S.Y. Shin, C.G. Hwang, S.J. Sung, P.L. Lee, J.G. Kim, N.D. Kim, J.W. Chung
Pohang University of Science and Technology, KR

Keywords: single-layer graphene, intraband plasmon, energy-momentum dispersion

Abstract:

we studied the dispersion of intraband plasmon excitation of a single layer graphene(SLG) formed on 6H-SiC(0001) surface by using high-resolution electron energy loss spectroscopy. The dispersion w(q) measured from SLG appears to be quite different from that of other multilayer graphene systems reported so far but in good accord with recent theory[3]. We also discuss how to form and identify the presence of a SLG by monitoring the spectral change of Fuchs-Kliewer (FK) phonon and interband transition during the initial graphitization process on the 6H-SiC(0001) surface. We thus present the unique behavior of intraband plasmon of SLG not hampered by multilayer effects or coupling with other excitations revealing another intrinsic nature of a SLG in addition to the well-known linear Dirac band.
 

TechConnect World 2011 Nanotech 2011 Clean Technology 2011 Microtech 2011 BioNanotech 2011 TechConnect Summit 2011
Program | Tracks | Exhibition | Press | Venue | Register |
Symposia | Short Courses | News | Subscribe | Contact | Site Map
© Copyright 2010 TechConnect World. All Rights Reserved.