Two-electron and four-electron periodicity in single-wall carbon nanotube quantum dots

被引：9
|
作者：
Fuse, T
Moriyama, S
Aoyagi, Y
Suzuki, M
Ishibashi, K
机构：
[1] RIKEN, Inst Phys & Chem Res, Adv Device Lab, Wako, Saitama 3510198, Japan
[2] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[3] JST, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2003年 / 34卷 / 3-6期
关键词：
carbon nanotubes; quantum dots; spin; even-odd effect; K-K ' subband;
D O I：
10.1016/j.spmi.2004.03.032
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Single quantum dots have been fabricated in single-wall carbon nanotubes and electrical transport properties have been measured at low temperature. Two- and four-electron periodicities have been clearly observed in the same sample in different gate voltage ranges. The former is an even-odd effect which originates from the spin degeneracy, while the latter is related to the additional two-fold band degeneracy. The results are discussed with the energy scales associated with the dot, and the possibility for a single spin manipulation is suggested. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：377 / 382
页数：6
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