物理学报2001，Vol.50Issue(6)：1150-1156,7.
手性环状碳纳米管的电子结构及磁化特性
THE ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF THE CHIRAL TOROIDAL CARBON NANOTUBES
摘要
Abstract
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 angleθ,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.关键词
手性环状碳纳米管/电子结构/磁化特性分类
数理科学引用本文复制引用
张振华,张华,彭景翠,陈小华..手性环状碳纳米管的电子结构及磁化特性[J].物理学报,2001,50(6):1150-1156,7.基金项目
国家自然科学基金（批准号：59972031）及湖南省自然科学基金（批准号：9811Y2047）资助的课题 （）
