Tuning the Electron-Phonon Coupling in Multilayer Graphene with Magnetic Fields

被引：87
作者：
Faugeras, C. [1 ]
Amado, M. [1 ,2 ]
Kossacki, P. [1 ,3 ]
Orlita, M. [1 ]
Sprinkle, M. [4 ]
Berger, C. [4 ,5 ]
de Heer, W. A. [4 ]
Potemski, M. [1 ]
机构：
[1] CNRS, LNCMI, F-38042 Grenoble 9, France
[2] Univ Complutense, QNS GISC, Dept Fis Mat, E-28040 Madrid, Spain
[3] Univ Warsaw, Inst Expt Phys, Warsaw, Poland
[4] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
[5] CNRS, Inst Neel, F-38042 Grenoble 9, France
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.103.186803
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Magneto-Raman scattering study of the E-2g optical phonons in multilayer epitaxial graphene grown on a carbon face of SiC is presented. At 4.2 K in magnetic field up to 33 T, we observe a series of well-pronounced avoided crossings each time the optically active inter-Landau level transition is tuned in resonance with the E-2g phonon excitation (at 196 meV). The width of the phonon Raman scattering response also shows pronounced variations and is enhanced in conditions of resonance. The experimental results are well reproduced by a model that gives directly the strength of the electron-phonon interaction.
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页数：4
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共 30 条
[11]   The rise of graphene [J].
Geim, A. K. ;
Novoselov, K. S. .
NATURE MATERIALS, 2007, 6 (03) :183-191
[12]   Filling-factor-dependent magnetophonon resonance in graphene [J].
Goerbig, M. O. ;
Fuchs, J.-N. ;
Kechedzhi, K. ;
Fal'ko, Vladimir I. .
PHYSICAL REVIEW LETTERS, 2007, 99 (08)
[13]   Spatially resolved raman spectroscopy of single- and few-layer graphene [J].
Graf, D. ;
Molitor, F. ;
Ensslin, K. ;
Stampfer, C. ;
Jungen, A. ;
Hierold, C. ;
Wirtz, L. .
NANO LETTERS, 2007, 7 (02) :238-242
[14]   Why multilayer graphene on 4H-SiC(000(1)over-bar) behaves like a single sheet of graphene [J].
Hass, J. ;
Varchon, F. ;
Millan-Otoya, J. E. ;
Sprinkle, M. ;
Sharma, N. ;
De Heer, W. A. ;
Berger, C. ;
First, P. N. ;
Magaud, L. ;
Conrad, E. H. .
PHYSICAL REVIEW LETTERS, 2008, 100 (12)
[15]  
KASHUBA O, ARXIV09065251
[16]   IMAGE OF THE FERMI SURFACE IN THE VIBRATION SPECTRUM OF A METAL [J].
KOHN, W .
PHYSICAL REVIEW LETTERS, 1959, 2 (09) :393-394
[17]   Massless fermions in multilayer graphitic systems with misoriented layers: Ab initio calculations and experimental fingerprints [J].
Latil, Sylvain ;
Meunier, Vincent ;
Henrard, Luc .
PHYSICAL REVIEW B, 2007, 76 (20)
[18]   Nonadiabatic Kohn anomaly in a doped graphene monolayer [J].
Lazzeri, Michele ;
Mauri, Francesco .
PHYSICAL REVIEW LETTERS, 2006, 97 (26)
[19]   Graphene on the C-terminated SiC (0001) surface: An ab initio study [J].
Magaud, L. ;
Hiebel, F. ;
Varchon, F. ;
Mallet, P. ;
Veuillen, J. -Y. .
PHYSICAL REVIEW B, 2009, 79 (16)
[20]   OBSERVATION OF INTERACTION OF PLASMONS WITH LONGITUDINAL OPTICAL PHONONS IN GAAS [J].
MOORADIAN, A ;
WRIGHT, GB .
PHYSICAL REVIEW LETTERS, 1966, 16 (22) :999-+
123