Quasiparticle Chirality in Epitaxial Graphene Probed at the Nanometer Scale

被引：145

作者：

Brihuega, I. ^{[1
]}

Mallet, P. ^{[2
]}

Bena, C. ^{[3
]}

Bose, S. ^{[1
]}

Michaelis, C. ^{[1
]}

Vitali, L. ^{[1
]}

Varchon, F. ^{[2
]}

Magaud, L.

Kern, K. ^{[1
,4
]}

Veuillen, J. Y. ^{[2
]}

机构：

[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[2] UJF, CNR, Inst Neel, F-38042 Grenoble, France

[3] CEA Saclay, Inst Phys Theor, F-91190 Gif Sur Yvette, France

[4] Ecole Polytech Fed Lausanne, Inst Phys Nanostruct, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.101.206802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Graphene exhibits unconventional two-dimensional electronic properties resulting from the symmetry of its quasiparticles, which leads to the concepts of pseudospin and electronic chirality. Here, we report that scanning tunneling microscopy can be used to probe these unique symmetry properties at the nanometer scale. They are reflected in the quantum interference pattern resulting from elastic scattering off impurities, and they can be directly read from its fast Fourier transform. Our data, complemented by theoretical calculations, demonstrate that the pseudospin and the electronic chirality in epitaxial graphene on SiC(0001) correspond to the ones predicted for ideal graphene.

引用

页数：4

共 30 条

[1] Berry's phase and absence of back scattering in carbon nanotubes [J].

Ando, T ;

Nakanishi, T ;

Saito, R .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (08) :2857-2862

[2] Effect of a single localized impurity on the local density of states in monolayer and bilayer graphene [J].

Bena, Cristina .

PHYSICAL REVIEW LETTERS, 2008, 100 (07)

[3] Electronic confinement and coherence in patterned epitaxial graphene [J].

Berger, Claire ;

Song, Zhimin ;

Li, Xuebin ;

Wu, Xiaosong ;

Brown, Nate ;

Naud, Cecile ;

Mayou, Didier ;

Li, Tianbo ;

Hass, Joanna ;

Marchenkov, Atexei N. ;

Conrad, Edward H. ;

First, Phillip N. ;

de Heer, Wait A. .

SCIENCE, 2006, 312 (5777) :1191-1196

[4] Symmetry breaking in few layer graphene films [J].

Bostwick, Aaron ;

Ohta, Taisuke ;

McChesney, Jessica L. ;

Emtsev, Konstantin V. ;

Seyller, Thomas ;

Horn, Karsten ;

Rotenberg, Eli .

NEW JOURNAL OF PHYSICS, 2007, 9

[5] Quasiparticle dynamics in graphene [J].

Bostwick, Aaron ;

Ohta, Taisuke ;

Seyller, Thomas ;

Horn, Karsten ;

Rotenberg, Eli .

NATURE PHYSICS, 2007, 3 (01) :36-40

[6] Friedel oscillations, impurity scattering, and temperature dependence of resistivity in graphene [J].

Cheianov, Vadim V. ;

Fal'ko, Vladimir I. .

PHYSICAL REVIEW LETTERS, 2006, 97 (22)

[7] IMAGING STANDING WAVES IN A 2-DIMENSIONAL ELECTRON-GAS [J].

CROMMIE, MF ;

LUTZ, CP ;

EIGLER, DM .

NATURE, 1993, 363 (6429) :524-527

[8] Epitaxial graphene [J].

de Heer, Walt A. ;

Berger, Claire ;

Wu, Xiaosong ;

First, Phillip N. ;

Conrad, Edward H. ;

Li, Xuebin ;

Li, Tianbo ;

Sprinkle, Michael ;

Hass, Joanna ;

Sadowski, Marcin L. ;

Potemski, Marek ;

Martinez, Gerard .

SOLID STATE COMMUNICATIONS, 2007, 143 (1-2) :92-100

[9]

*EPAPS, EPRLTAO101072847 EPA

[10] Heteroepitaxial graphite on 6H-SiC(0001):: Interface formation through conduction-band electronic structure [J].

Forbeaux, I ;

Themlin, JM ;

Debever, JM .

PHYSICAL REVIEW B, 1998, 58 (24) :16396-16406

← 1 2 3 →