One-dimensional energy dispersion of single-walled carbon nanotubes by resonant electron scattering

被引：70

作者：

Ouyang, M ^{[1
]}

Huang, JL ^{[1
]}

Lieber, CM ^{[1
]}

机构：

[1] Harvard Univ, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.88.066804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We characterized the energy band dispersion near the Fermi level in single-walled carbon nanotubes using low-temperature scanning tunneling microscopy. Analysis of energy-dependent standing wave oscillations, which result from quantum interference of electrons resonantly scattered by defects, yields a linear energy dispersion near E-F, and indicates the importance of parity in scattering for armchair single-walled carbon nanotubes. Additionally, these data provide values of the tight-binding overlap integral and Fermi wave vector, in good agreement with previous work, but indicate that the electron coherence length is substantially shortened.

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页数：4

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