THE ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF THE CHIRAL TOROIDAL CARBON NANOTUBES | Zendy

Zhenhua Zhang | Zendy; PENG JING-CUI | Zendy; Xiaohua Chen | Zendy; Hua Zhang | Zendy

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THE ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF THE CHIRAL TOROIDAL CARBON NANOTUBES

Author(s) -

Zhenhua Zhang,

PENG JING-CUI,

Xiaohua Chen,

Hua Zhang

Publication year - 2001

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.50.1150

Subject(s) - carbon nanotube , toroid , materials science , electronic structure , carbon nanobud , condensed matter physics , nanotechnology , optical properties of carbon nanotubes , nanotube , physics , plasma , quantum mechanics

Based on the tight-binding model of π electrons for a graphite sheet, the electronic structure of the chiral toroidal carbon nanotubes(TCNTs) has been derived.The quantum properties and magnetic pattern of TCNTs have been investigated in detail in this paper. A magnetic field can induce a metal-semiconductor transition for typeⅠ and Ⅱ TCNTs.The computation and analysis also show: when- T=0K, the magnetism of typeⅠand Ⅱ TCNTs are a linearly function of the magnetic flux Φ, with a period Φ0(h/e),which is sensitive to chiral angle θ,toroidal width r and temperture T, independent of toroidal radius R. The magnetism of chiral TCNTs is much stronger than that of the armchair or zigzag TCNTs. The magnetism of type Ⅲ TCNTs is very weak,without regularity.

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