Probing the electrostatic environment of bilayer graphene using Raman spectra

2009 ◽  
Vol 80 (15) ◽  
Author(s):  
Paola Gava ◽  
Michele Lazzeri ◽  
A. Marco Saitta ◽  
Francesco Mauri
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene

Raman spectra of twisted CVD bilayer graphene

Carbon ◽  
2017 ◽  
Vol 123 ◽  
pp. 302-306 ◽  
Author(s):  
Pankaj Ramnani ◽  
Mahesh R. Neupane ◽  
Supeng Ge ◽  
Alexander A. Balandin ◽  
Roger K. Lake ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene

Raman spectra of twisted bilayer graphene close to the magic angle

2D Materials ◽  
2022 ◽  
Author(s):  
Tiago Campolina Barbosa ◽  
Andreij C. Gadelha ◽  
Douglas A. A. Ohlberg ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Laser Excitation ◽  
Bilayer Graphene ◽  
Geometrical Model ◽  
Excitation Wavelength ◽  
Magic Angle ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Excitation Laser ◽  
Twisted Bilayer Graphene

Abstract In this work, we study the Raman spectra of twisted bilayer graphene samples as a function of their twist-angles (θ), ranging from 0.03º to 3.40º, where local θ are determined by analysis of their associated moiré superlattices, as imaged by scanning microwave impedance microscopy. Three standard excitation laser lines are used (457, 532, and 633 nm wavelengths), and the main Raman active graphene bands (G and 2D) are considered. Our results reveal that electron-phonon interaction influences the G band's linewidth close to the magic angle regardless of laser excitation wavelength. Also, the 2D band lineshape in the θ < 1º regime is dictated by crystal lattice and depends on both the Bernal (AB and BA) stacking bilayer graphene and strain soliton regions (SP) [1]. We propose a geometrical model to explain the 2D lineshape variations, and from it, we estimate the SP width when moving towards the magic angle.

Probing 2D sub-bands of bi-layer graphene

RSC Advances ◽  
2014 ◽  
Vol 4 (92) ◽  
pp. 51067-51071 ◽  
Author(s):  
Cheng-Wen Huang ◽  
Bing-Jie Lin ◽  
Sung-Yen Juang ◽  
Fu-Yu Shih ◽  
Wei-Hua Wang ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene ◽  
Layer Graphene ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Investigations of Raman spectra and surface enhanced Raman spectra (SERS) of supported and suspended bilayer graphene were realized.

scholarly journals Comment on “Raman spectra of misoriented bilayer graphene”

2009 ◽  
Vol 79 (23) ◽  
Author(s):  
Zhenhua Ni ◽  
Yingying Wang ◽  
Ting Yu ◽  
Yumeng You ◽  
Zexiang Shen
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene

scholarly journals Raman spectra of out-of-plane phonons in bilayer graphene

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
Kentaro Sato ◽  
Jin Sung Park ◽  
Riichiro Saito ◽  
Chunxiao Cong ◽  
Ting Yu ◽  
...  
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene ◽  
Out Of Plane

scholarly journals Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film

AIP Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 032122 ◽  
Author(s):  
Minggang Xia ◽  
Zhidan Su ◽  
Shengli Zhang
Keyword(s):  
Thin Film ◽  
Methyl Methacrylate ◽  
Raman Spectra ◽  
Bilayer Graphene ◽  
Poly Methyl Methacrylate

scholarly journals Raman spectra of misoriented bilayer graphene

2008 ◽  
Vol 78 (11) ◽  
Author(s):  
P. Poncharal ◽  
A. Ayari ◽  
T. Michel ◽  
J.-L. Sauvajol
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene

Infrared and Raman spectra of AA-stacking bilayer graphene

2010 ◽  
Vol 21 (6) ◽  
pp. 065711 ◽  
Author(s):  
Yuehua Xu ◽  
Xiaowei Li ◽  
Jinming Dong
Keyword(s):  
Raman Spectra ◽  
Bilayer Graphene ◽  
Infrared And Raman Spectra
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