物理学报2011，Vol.60Issue(12)：510-517,8.
卷曲效应对单壁碳纳米管电子结构的影响
Effects of curvature on the electronic structures of single-walled carbon nanotubes
摘要
Abstract
Based on the energy dispersion relation involving curvature effects for the single-walled carbon nanotube （SWCNT）,the electronic velocity and the effective mass of the lowest conduction band for the SWCNT are computed and they are compared with the results without consideration of the curvature effects.The analysis shows that the influences of the curvature effect on the electronic velocity and effective mass depend on type of SWCNT,that is,the metallic zigzag-SWCNT is most sensitive to curvature effect,armchair-SWCNT is second most sensive to curvature effect,and the semiconducting zigzag-SWCNT is poorly sensitive to curvature effect.These findings suggest that curvature effects have the largest effect on the electronic structure and the low-bias transport behaviors of the metallic zigzag-SWCNT,a moderate effect on those of the armchair-SWCNT,and the smallest effect on those of the semiconducting zigzag-SWCNT,which are in good agreement with experimental measurements and the calculated results from the density-functional theory.关键词
单壁碳纳米管/卷曲效应/电子速度/电子有效质量Key words
single-walled carbon nanotube/curvature effect/electronic velocity/electronic effective mass分类
化学化工引用本文复制引用
秦威,张振华,刘新海..卷曲效应对单壁碳纳米管电子结构的影响[J].物理学报,2011,60(12):510-517,8.基金项目
国家自然科学基金（批准号：61071015 60771059）资助的课题 （）
