Structure and Electronic Properties of Graphene Nanoislands on Co(0001)

被引：230

作者：

Eom, Daejin ^{[2
,3
,4
,5
]}

Prezzi, Deborah ^{[2
,6
]}

Rim, Kwang Taeg ^{[3
]}

Zhou, Hui ^{[4
,5
]}

Lefenfeld, Michael ^{[3
]}

Xiao, Shengxiong ^{[3
]}

Nuckolls, Colin ^{[3
]}

Hybertsen, Mark S. ^{[1
]}

Heinz, Tony F. ^{[2
,4
,5
]}

Flynn, George W. ^{[2
,3
]}

机构：

[1] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[2] Columbia Univ, Nanoscale Sci & Engn Ctr, New York, NY 10027 USA

[3] Columbia Univ, Dept Chem, New York, NY 10027 USA

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

[5] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA

[6] INFM CNR S3 Natl Res Ctr, I-41100 Modena, Italy

来源：

NANO LETTERS | 2009年 / 9卷 / 08期

基金：

美国国家科学基金会;

关键词：

SCANNING TUNNELING SPECTROSCOPY; MONOLAYER GRAPHITE; SURFACE; NI(111); CARBON; STATES;

D O I：

10.1021/nl900927f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have grown well-ordered graphene adlayers on the lattice-matched Co(0001) surface, Low-temperature scanning tunneling microscopy measurements demonstrate an on-top registry of the carbon atoms with respect to the Co(0001) surface. The tunneling conductance spectrum shows that the electronic structure is substantially altered from that of isolated graphene, implying a strong coupling between graphene and cobalt states. Calculations using density functional theory confirm that structures with on-top registry have the lowest energy and provide clear evidence for strong electronic coupling between the graphene pi-states and Co d-states at the interface.

引用

页码：2844 / 2848

页数：5

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