Extrinsic and intrinsic nonlinear current-voltage characteristics in charge ordered oxides

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	Extrinsic and intrinsic nonlinear current-voltage characteristics in charge ordered oxides
	Wang, F ; Zou, T ; Liu, Y ; Yan, LQ ; Sun, Y
刊名	JOURNAL OF APPLIED PHYSICS
	2012
卷号	111 期号:3
关键词	DRIVEN PHASE-TRANSITION VALENCE SYSTEM LUFE2O4 DENSITY-WAVE MANGANITES BEHAVIOR
ISSN号	0021-8979
通讯作者	Sun, Y: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We present a systematic study to clarify the origin of nonlinear I-V characteristics widely observed in charge ordered oxides. The experiments performed on the charge ordered YbFe2O4 single crystals demonstrate that the I-V behavior strongly depends on the measurement parameters, such as the width and strength of applied voltage/current pulse, the time interval between two subsequent pulses, and the time delay before reading a data. Correspondingly, three regimes are identified: (i) steep nonlinear I-V behavior induced by self-heating when the pulse width is big and/or the time interval is short; (ii) smooth nonlinear I-V characteristic in the low field range when the electric pulse width is small and the time interval is long enough, owing to sliding of charge density wave; (iii) abrupt collapse of charge order/charge density wave at high electric fields. A proper measurement scheme must be employed in order to distinguish the intrinsic effects associated with electric field modulation of charge order from the extrinsic self-heating effect. (C) 2012 American Institute of Physics. [doi:10.1063/1.3681184]
收录类别	SCI
资助信息	Natural Science Foundation of China [51021061, 50831006, 11074293]; National Key Basic Research Program of China [2011CB921801]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/37858]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, F,Zou, T,Liu, Y,et al. Extrinsic and intrinsic nonlinear current-voltage characteristics in charge ordered oxides[J]. JOURNAL OF APPLIED PHYSICS,2012,111(3).
APA	Wang, F,Zou, T,Liu, Y,Yan, LQ,&Sun, Y.(2012).Extrinsic and intrinsic nonlinear current-voltage characteristics in charge ordered oxides.JOURNAL OF APPLIED PHYSICS,111(3).
MLA	Wang, F,et al."Extrinsic and intrinsic nonlinear current-voltage characteristics in charge ordered oxides".JOURNAL OF APPLIED PHYSICS 111.3(2012).