Electrical and thermal transport in single nickel nanowire
Electrical and thermal transport in single nickel nanowire
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DOI：
10.1063/1.2839572
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发表时间：
2008-02-11
影响因子：
4
通讯作者：
Lai, S. J.
中科院分区：
文献类型：
--
作者：
Ou, M. N.;Yang, T. J.;Lai, S. J.
在15-300 K温度范围内测量了悬浮镍纳米线的热导率和电阻率。的热导率和洛伦兹数的温度依赖性强烈不同于散装。在Ni纳米线中的输运的比较表明，在温度75 < T < 300 K时，Wiedemann-Franz（WF）定律成立，而在温度T < 75 K时，WF定律被违反，表明在该材料中的热电流比电流被抑制得更多。结果解释了限制尺寸，增强的无序，和N-过程的增长贡献的综合效应。(C)2008年美国物理研究所。
The thermal conductivity and electrical resistivity of a suspended nickel nanowire have been measured for T=15-300 K. The temperature dependence of the thermal conductivity and the Lorenz number strongly differ from the bulk. The comparison of the transports in the Ni nanowire shows, that at temperatures 75 < T < 300 K Wiedemann-Franz (WF) law holds, whereas at temperatures T < 75 K the WF law is violated, indicating that thermal current in this material is suppressed more than electrical current. The results are explained by combined effect of confined dimension, enhanced disorder, and grown contribution of N-processes. (C) 2008 American Institute of Physics.