Identifying the orientation of edge of graphene using G band Raman spectra

Ken Ichi Sasaki, Riichiro Saito, Katsunori Wakabayashi, Toshiaki Enoki

研究成果: Article査読

47 被引用数 (Scopus)

抄録

The electron-phonon matrix elements relevant to the Raman intensity and Kohn anomaly of the G band are calculated by taking into account the effect of the edge of graphene. The analysis of the pseudospin reveals that the longitudinal optical phonon mode undergoes a strong Kohn anomaly for both the armchair and zigzag edges, and that only the longitudinal (transverse) optical phonon mode is a Raman active mode near the armchair (zigzag) edge. The Raman intensity is enhanced when the polarization of the incident laser light is parallel (perpendicular) to the armchair (zigzag) edge. This asymmetry between the armchair and zigzag edges is useful in identifying the orientation of the edge of graphene.

本文言語English
論文番号044603
ジャーナルjournal of the physical society of japan
79
4
DOI
出版ステータスPublished - 2010 4 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Identifying the orientation of edge of graphene using G band Raman spectra」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル