Edge and Surface Plasmons in Graphene Nanoribbons

被引：167

作者：

Fei, Z. ^{[1
,2
]}

Goldflam, M. D. ^{[1
]}

Wu, J-S. ^{[1
]}

Dai, S. ^{[1
]}

Wagner, M. ^{[1
]}

McLeod, A. S. ^{[1
]}

Liu, M. K. ^{[3
]}

Post, K. W. ^{[1
]}

Zhu, S. ^{[4
]}

Janssen, G. C. A. M. ^{[4
]}

Fogler, M. M. ^{[1
]}

Basov, D. N. ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[3] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11790 USA

[4] Delft Univ Technol, Dept Precis & Microsyst Engn, NL-2628 CD Delft, Netherlands

来源：

NANO LETTERS | 2015年 / 15卷 / 12期

关键词：

Graphene nanoribbons; CVD graphene; nano-infrared imaging; plasmon-phonon coupling; edge plasmons; TERAHERTZ;

D O I：

10.1021/acs.nanolett.5b03834

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on nano-infrared (IR) imaging studies of confined plasmon modes inside patterned graphene nanoribbons (GNRs) fabricated with high-quality chemical-vapordeposited (CVD) graphene on Al2O3 substrates. The confined geometry of these ribbons leads to distinct mode patterns and strong field enhancement, both of which evolve systematically with the ribbon width. In addition, spectroscopic nanoimaging in the mid-infrared range 850-1450 cm(-1) allowed us to evaluate the effect of the substrate phonons on the plasmon damping. Furthermore, we observed edge plasmons: peculiar one-dimensional modes propagating strictly along the edges of our patterned graphene nanostructures.

引用

页码：8271 / 8276

页数：6

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