2007/10/21 by K. Sasaki, Kenji Sasaki, M. Suzuki +2 · 1 citation
Materials Science · Physics and Astronomy · #Graphene research and applications #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.77.045138
published as Phys. Rev. B 77, 045138 (2008) · 7 pages, 4 figures
arxiv created 2007/10/21 · openalex publication_date 2008/01/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Two delocalized states of metallic zigzag carbon nanotubes near the Dirac point can be localized by the Aharanov-Bohm magnetic field around 20\phantom\rule0.3em0exT. The dependence of the localization on the length and diameter of the nanotubes shows that the localization-delocalization transition can be observed for 2\phantom\rule0.3em0exnm diameter tube. The mechanism of the localization is explained in terms of the deformation-induced gauge field, which shows a topological nature of the localization. The transition from the delocalized states to the localized states can be observed by scanning tunneling microscopy and spectroscopy. A similarity between the transition and the spin Hall effect is discussed.