Photocurrent spectroscopy of double wall carbon nanotubes

被引：16

作者：

Mohite, A

Sumanasekera, GU

Hirahara, K

Bandow, S

Iijima, S

Alphenaar, BW ^{[1
]}

机构：

[1] Univ Louisville, Dept Elect & Comp Engn, Louisville, KY 40292 USA

[2] Univ Louisville, Dept Phys, Louisville, KY 40292 USA

[3] Meijo Univ, 21st Century COE, Dept Mat Sci & Engn, Nagoya, Aichi 4688502, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2005年 / 412卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.cplett.2005.06.109

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We describe spectroscopy measurements of double wall carbon nanotubes using a displacement photocurrent technique. Peaks in the photocurrent are observed at excitation energies corresponding to the spacing of van Hove singularities for both the inner and outer shells of the nanotube. The shell assignment for the peaks can be made by comparing the spectra before and after the formation of the inner shell. The level spacing observed for the inner shell suggests that the standard tight binding model is insufficient to describe the electron energy spectra for extremely small tubes. (c) 2005 Elsevier B.V. All rights reserved.

引用

收藏

页码：190 / 194

页数：5

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