Raman and infrared properties and layer dependence of the phonon dispersions in multilayered graphene

被引：66

作者：

Jiang, Jin-Wu ^{[1
]}

Tang, Hui ^{[1
,2
]}

Wang, Bing-Shen ^{[3
,4
]}

Su, Zhao-Bin ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, State Key Lab Semicond Superlattices Microstruct, Beijing 100083, Peoples R China

[4] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China

[5] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.77.235421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The symmetry group analysis is applied to classify the phonon modes of N-stacked graphene layers (NSGLs) with AB and AA stacking, particularly their infrared and Raman properties. The dispersions of various phonon modes are calculated in a multilayer vibrational model, which is generalized from the lattice vibrational potentials of graphene to including the interlayer interactions in NSGLs. The experimentally reported redshift phenomena in the layer-number dependence of the intralayer optical C-C stretching mode frequencies are interpreted. An interesting low-frequency interlayer optical mode is revealed to be Raman or infrared active in even or odd NSGLs, respectively. Its frequency shift is sensitive to the layer number and saturated at about 10 layers.

引用

页数：8

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