Local energy gap in deformed carbon nanotubes

Ken Ichi Sasaki, Yoshiyuki Kawazoe, Riichiro Saito

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


The effects of graphite surface geometrical deformation on the dynamics of conducting electrons are investigated theoretically. The analysis is performed within the framework of a deformation-induced gauge field and corresponding deformation-induced magnetic field. It is shown that the latter gives a local energy gap along the axis of a deformed nanotube. We compare our energy gap results with experimental data on energy gaps in nanotubes and peapods. We also discuss the mixing of two Fermi points and construct a general model of low energy dynamics, including a short-range deformation of the graphite sheet. This model is equivalent to the Weyl equation in U(1) Abelian and SU(2) non-Abelian deformation-induced gauge fields.

Original languageEnglish
Pages (from-to)463-480
Number of pages18
JournalProgress of Theoretical Physics
Issue number3
Publication statusPublished - 2005 Mar


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