Spectromicroscopy of single and multilayer graphene supported by a weakly interacting substrate

被引：96

作者：

Knox, Kevin R. ^{[1
,2
]}

Wang, Shancai ^{[2
,3
]}

Morgante, Alberto ^{[4
,5
]}

Cvetko, Dean ^{[4
,6
]}

Locatelli, Andrea ^{[7
]}

Mentes, Tevfik Onur ^{[7
]}

Nino, Miguel Angel ^{[7
]}

Kim, Philip ^{[1
]}

Osgood, R. M., Jr. ^{[2
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Columbia Univ, Dept Appl Phys, New York, NY 10027 USA

[3] Renmin Univ China, Dept Phys, Beijing, Peoples R China

[4] INFM, Lab TASC, I-34012 Trieste, Italy

[5] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[6] Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia

[7] Elettra Sincrotrone Trieste SCpA, I-34012 Trieste, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.78.201408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the electronic structure and surface morphology of exfoliated graphene on an insulating substrate using angle-resolved photoemission and low-energy electron diffraction. Our results show that, although exfoliated graphene is microscopically corrugated, the valence band retains a massless fermionic dispersion with a Fermi velocity of similar to 10(6) m/s. We observe a close relationship between the morphology and electronic structure, which suggests that controlling the interaction between graphene and the supporting substrate is essential for graphene device applications.

引用

页数：4

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