Quantum size effect and fluctuating conductance in CuO nanocrystals at high pressure

IMR OpenIR

	Quantum size effect and fluctuating conductance in CuO nanocrystals at high pressure
	H. M. Fan; Z. X. Bao; Z. Y. Wu; C. X. Liu; L. Cao; S. S. Xie; B. S. Zou
	2003
发表期刊	Physics of Low-Dimensional Structures
ISSN	0204-3467
卷号	41035 页码:125-135
摘要	Different-sized CuO nanocrystals were prepared by precipitation-pyrolysis method, with sizes of 7 nm, 10 nm, and 30 nm. The absorption spectra of CuO nanocrystals showed clear bandshift as an evidence of the quantum size effect. On a measurement device with a diamond anvil cell, the pressure-resistance relations of different-sized CuO nanocrystals under pressure up to 20 GPa at room temperature were obtained. The experimental results showed varying pressure-dependent resistance of CuO nanocrystals of different sizes. There was an interesting phenomenon occurring for the smallest CuO nanocrystal (7 nm), that is, a significant resistance fluctuation of large amplitude under pressure appears with a frequency-field dependence. This fluctuation clearly originates from surface charge oscillations on the surface of many nanocrystals with the incident field due to the size effects.
部门归属	chinese acad sci, nanophys & nanodevice lab, inst phys, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;fan, hm (reprint author), chinese acad sci, nanophys & nanodevice lab, inst phys, beijing 100080, peoples r china
关键词	Semiconductor Clusters Dots Transformation Conductivity
URL	查看原文
WOS记录号	WOS:000185238400015
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35825
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. M. Fan,Z. X. Bao,Z. Y. Wu,et al. Quantum size effect and fluctuating conductance in CuO nanocrystals at high pressure[J]. Physics of Low-Dimensional Structures,2003,41035:125-135.
APA	H. M. Fan.,Z. X. Bao.,Z. Y. Wu.,C. X. Liu.,L. Cao.,...&B. S. Zou.(2003).Quantum size effect and fluctuating conductance in CuO nanocrystals at high pressure.Physics of Low-Dimensional Structures,41035,125-135.
MLA	H. M. Fan,et al."Quantum size effect and fluctuating conductance in CuO nanocrystals at high pressure".Physics of Low-Dimensional Structures 41035(2003):125-135.