Coulomb scattering rates of excited carriers in moderate-gap carbon nanotubes

C. W. Chiu, F. L. Shyu, C. P. Chang, D. S. Chuu, M. F. Lin

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Temperature induces some free carriers in moderate-gap carbon nanotubes, which, thus, creates the low-frequency intraband e-h excitations. Such excitations are the effective deexcitation channels for the excited electrons (holes) in conduction (valence) bands, while they are very weak. The Coulomb decay rates of the lowest two conduction bands are sensitive to the changes in wave vector, radius, and temperature. However, those of the band-edge states depend on chirality weakly. These results directly reflect the strong energy dispersions and the temperature-dependent electron distributions. The calculated results are roughly consistent with the experimental measurements from the ultrafast optical spectroscopies.

原文English
文章編號235407
期刊Physical Review B - Condensed Matter and Materials Physics
73
發行號23
DOIs
出版狀態Published - 2006

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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