Impurity screening in carbon nanotubes

M. Lin, D. Chuu

研究成果: Article同行評審

45 引文 斯高帕斯(Scopus)

摘要

Nanotube geometry determines electronic structure and thus impurity screening. A metallic carbon nanotube could effectively screen a charged impurity, while a semiconducting carbon nanotube could not. The ability to screen a long-range Coulomb field is mainly determined by whether there are free carriers in the subbands nearest the Fermi level. The detailed screening properties are sensitive to the impurity position, and the tubular structure (such as radius and chiral angle). Strong, short-wavelength Friedel oscillations at long distances are found to exist only in metallic armchair nanotubes. They are relatively obvious for a smaller armchair nanotube, and could survive at room temperature.

原文English
頁(從 - 到)4996-5002
頁數7
期刊Physical Review B - Condensed Matter and Materials Physics
56
發行號8
DOIs
出版狀態Published - 1997 一月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

指紋

深入研究「Impurity screening in carbon nanotubes」主題。共同形成了獨特的指紋。

引用此