Symmetry breaking of graphene monolayers by molecular decoration

Xiaochen Dong, Yumeng Shi, Yang Zhao, Dongmeng Chen, Jun Ye, Yugui Yao, Fang Gao, Zhenhua Ni, Ting Yu, Zexiang Shen, Yinxi Huang, Peng Chen, Lain Jong Li

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240 引用 (Scopus)

摘要

Aromatic molecules can effectively exfoliate graphite into graphene monolayers, and the resulting graphene monolayers sandwiched by the aromatic molecules exhibit a pronounced Raman G-band splitting, similar to that observed in single-walled carbon nanotubes. Raman measurements and calculations based on the force-constant model demonstrate that the absorbed aromatic molecules are responsible for the G-band splitting by removing the energy degeneracy of in-plane longitudinal and transverse optical phonons at the Γ point.

源语言英语
文章编号135501
期刊Physical Review Letters
102
13
DOI
出版状态已出版 - 30 3月 2009
已对外发布

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