期刊
NANO LETTERS
卷 13, 期 12, 页码 5991-5996出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl403175g
关键词
Single-wall carbon nanotubes; terahertz; plasmon resonance; density gradient ultracentrifugation
类别
资金
- Department of Energy [DE-FG02-06ER46308]
- National Science Foundation [OISE-0530220, EEC-0540832]
- Robert A. Welch Foundation [C-1509]
Plasmon resonance is expected to occur in metallic and doped semiconducting carbon nanotubes in the terahertz frequency range, but its convincing identification has so far been elusive. The origin of the terahertz conductivity peak commonly observed for carbon nanotube ensembles remains controversial. Here we present results of optical, terahertz, and direct current (DC) transport measurements on highly enriched metallic and semiconducting nanotube films. A broad and strong terahertz conductivity peak appears in both types of films, whose behaviors are consistent with the plasmon resonance explanation, firmly ruling out other alternative explanations such as absorption due to curvature-induced gaps.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据