Vibrational Tamm states at the edges of graphene nanoribbons

被引:64
作者
Savin, Alexander V. [1 ,2 ]
Kivshar, Yuri S. [1 ]
机构
[1] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys & Engn, Canberra, ACT 0200, Australia
[2] Russian Acad Sci, NN Semenov Chem Phys Inst, Moscow 119991, Russia
来源
PHYSICAL REVIEW B | 2010年 / 81卷 / 16期
基金
澳大利亚研究理事会;
关键词
CARBON; POLYETHYLENE; GRAPHITE; SOLITONS; CRYSTALS; DYNAMICS; MEDIA;
D O I
10.1103/PhysRevB.81.165418
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study vibrational states localized at the edges of graphene nanoribbons. Such surface oscillations can be considered as a phonon analog of Tamm states in the electronic theory. We consider both armchair and zigzag graphene stripes and demonstrate that surface modes correspond to phonons localized at the edges of the graphene nanoribbon, and they can be classified as in-plane and out-of-plane modes. In armchair nanoribbons anharmonic edge modes can experience longitudinal localization in the form of self-localized nonlinear modes or surface breather solitons.
引用
收藏
页数:9
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