Electronic Structure of Spatially Aligned Graphene Nanoribbons on Au(788)

被引：206

作者：

Linden, S. ^{[1
,2
]}

Zhong, D. ^{[1
,2
]}

Timmer, A. ^{[1
,2
]}

Aghdassi, N. ^{[1
,2
]}

Franke, J. H. ^{[1
,2
]}

Zhang, H. ^{[1
,2
]}

Feng, X. ^{[3
]}

Muellen, K. ^{[3
]}

Fuchs, H. ^{[1
,2
,4
]}

Chi, L. ^{[1
,2
]}

Zacharias, H. ^{[1
,2
]}

机构：

[1] Univ Munster, Inst Phys, D-48149 Munster, Germany

[2] Ctr Nanotechnol, D-48149 Munster, Germany

[3] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[4] Karlsruhe Inst Technol, Inst Nanotechnol, D-76344 Karlsruhe, Germany

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 21期

关键词：

CARBON; FORM;

D O I：

10.1103/PhysRevLett.108.216801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a bottom-up approach of the selective and precise growth of subnanometer wide straight and chevron-type armchair nanoribbons (GNRs) on a stepped Au(788) surface using different specific molecular precursors. This process creates spatially well-aligned GNRs, as characterized by STM. High-resolution direct and inverse photoemission spectroscopy of occupied and unoccupied states allows the determination of the energetic position and momentum dispersion of electronic states revealing the existence of band gaps of several electron volts for straight 7-armchair, 13-armchair, and chevron-type GNRs in the electronic structure.

引用

页数：5

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