Electron-electron scattering rates in moderate-gap toroidal carbon nanotubes

T. S. Li, M. F. Lin

研究成果: Article同行評審

摘要

The π -electronic excitations and deexcitations in moderate-gap zigzag (m,0,p,-2p) toroidal carbon nanotubes are investigated by employing the random phase approximation and Fermi's golden rule. The low-frequency intra- π -state e-h excitations are the effective de-excitation channels of the excited electrons. The inelastic electron-electron scattering rates depend sensitively on the state index l, height, temperature, and type of zigzag TCN. The state with l=p has the largest scattering rate. The thicker the torus is, the faster the excited electrons will decay. The decay rates grow rapidly with rising temperature. The calculated results can be verified by ultrafast optical measurements.

原文English
文章編號073409
期刊Physical Review B - Condensed Matter and Materials Physics
76
發行號7
DOIs
出版狀態Published - 2007 8月 20

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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