石墨烯
泛音
拉曼散射
拉曼光谱
X射线拉曼散射
凝聚态物理
散射
Dirac(视频压缩格式)
亮度
材料科学
物理
量子力学
谱线
光学
中微子
作者
Eric J. Heller,Yuan Yang,Lucas Kocia,Wei Chen,Shiang Fang,Mario F. Borunda,Efthimios Kaxiras
出处
期刊:ACS Nano
[American Chemical Society]
日期:2016-02-04
卷期号:10 (2): 2803-2818
被引量:95
标识
DOI:10.1021/acsnano.5b07676
摘要
Raman scattering plays a key role in unraveling the quantum dynamics of graphene, perhaps the most promising material of recent times. It is crucial to correctly interpret the meaning of the spectra. It is therefore very surprising that the widely accepted understanding of Raman scattering, i.e., Kramers-Heisenberg-Dirac theory, has never been applied to graphene. Doing so here, a remarkable mechanism we term"transition sliding" is uncovered, explaining the uncommon brightness of overtones in graphene. Graphene's dispersive and fixed Raman bands, missing bands, defect density and laser frequency dependence of band intensities, widths of overtone bands, Stokes, anti-Stokes anomalies, and other known properties emerge simply and directly.
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