Electron-phonon coupling mechanism in two-dimensional graphite and single-wall carbon nanotubes

Ge G. Samsonidze, E. B. Barros, R. Saito, J. Jiang, G. Dresselhaus, M. S. Dresselhaus

研究成果: Article査読

57 被引用数 (Scopus)

抄録

The electron-phonon coupling in two-dimensional graphite and metallic single-wall carbon nanotubes is analyzed. The highest-frequency phonon mode at the K point in two-dimensional graphite opens a dynamical band gap that induces a Kohn anomaly. Similar effects take place in metallic single-wall carbon nanotubes that undergo Peierls transitions driven by the highest-frequency phonon modes at the Γ and K points. The dynamical band gap induces a nonlinear dependence of the phonon frequencies on the doping level and gives rise to strong anharmonic effects in two-dimensional graphite and metallic single-wall carbon nanotubes.

本文言語English
論文番号155420
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
75
15
DOI
出版ステータスPublished - 2007 4 19

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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