Current--voltage characteristics of an individual helical CdS nanowire rope
Long Yun-Ze(龙云泽)a)†, Wang Wen-Long(王文龙)b), Bai Feng-Lian(白凤莲)b), Chen Zhao-Jia(陈兆甲)c), Jin Ai-Zi(金爱子)c), and Gu Chang-Zhi(顾长志)c)
aCollege of Physics Science, Qingdao University, Qingdao 266071, China; b Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China; cBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Abstract This paper studies the electronic transport in an individual helically twisted CdS nanowire rope, on which platinum microleads are attached by focused-ion beam deposition. The current--voltage ($I-V$) characteristics are nonlinear from 300 down to 60 K. Some step-like structures in the $I-V$ curves and oscillation peaks in the differential conductance (d$I$/d$V-V$) curves have been observed even at room temperature. It proposes that the observed behaviour can be attributed to Coulomb-blockade transport in the one-dimensional CdS nanowires with diameters of 6--10 nm.
Received: 26 August 2007
Revised: 27 September 2007
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10604038) and Program
for New Century Excellent Talents in
University, China (Grant No NCE72007).
Cite this article:
Long Yun-Ze(龙云泽), Wang Wen-Long(王文龙), Bai Feng-Lian(白凤莲), Chen Zhao-Jia(陈兆甲), Jin Ai-Zi(金爱子), and Gu Chang-Zhi(顾长志) Current--voltage characteristics of an individual helical CdS nanowire rope 2008 Chin. Phys. B 17 1389
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