1999/02/28 by Kikuo Harigaya
Materials Science · Physics and Astronomy · #Boron and Carbon Nanomaterials Research #Carbon Nanotubes in Composites #Graphene research and applications #cond-mat #physics.chem-ph #physics.optics #quant-ph
paper · pdf · doi:10.1103/physrevb.60.1452
published as Phys. Rev. B 60 (1999) 1452-1455 · Phys. Rev. B: Brief Reports (to be published). Related preprints can be found at http://www.etl.go.jp/~harigaya/NEW.html
arxiv created 1999/04/16 · openalex publication_date 1999/07/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Disorder effects on the density of states in carbon nanotubes are analyzed by a tight-binding model with Gaussian bond or site disorder. Metallic armchair and semiconducting zigzag nanotubes are investigated. In the strong disorder limit, the conduction- and valence-band states merge, and a finite density of states appears at the Fermi energy in both metallic and semiconducting carbon nanotubes. The bond disorder gives rise to a huge density of states at the Fermi energy differently from that of the site-disorder case. Consequences for experiments are discussed.