Strain-mediated electric-field control of photoinduced demagnetization in La0.8Ca0.2MnO3 thin films

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	Strain-mediated electric-field control of photoinduced demagnetization in La0.8Ca0.2MnO3 thin films
	Guo, EJ ; Gao, J ; Lu, HB
刊名	APPLIED PHYSICS LETTERS
	2011
卷号	98 期号:8
关键词	LA0.7CA0.3MNO3
ISSN号	0003-6951
通讯作者	Gao, J (reprint author), Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Hong Kong, Peoples R China.
中文摘要	La0.8Ca0.2MnO3 (LCMO) thin films have been epitaxially grown on ferroelectric 0.67Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3) (PMN-PT) substrates. The substrate-induced strain effects on the transport and photoinduced demagnetization in LCMO films were investigated. The photoinduced resistances (PRs) of LCMO systematically changed versus temperature before and after ferroelectric-poling on PMN-PT, indicating that photoexcited extra carriers in LCMO may suppress the neighboring spin correlation due to the photoassisted hopping of anti-Jahn-Teller polarons. Moreover, a significant modulation on PR by electric fields applied across PMN-PT was observed. In situ x-ray diffraction indicates that the observed variations result from substrate-induced strain due to the ferroelectric polarization or converse piezoelectric effect. (C) 2011 American Institute of Physics. [doi:10.1063/1.3556613]
收录类别	SCI
资助信息	Research Grant Council of Hong Kong [HKU702409P]; URC of University of Hong Kong
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/53124]
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	Guo, EJ,Gao, J,Lu, HB. Strain-mediated electric-field control of photoinduced demagnetization in La0.8Ca0.2MnO3 thin films[J]. APPLIED PHYSICS LETTERS,2011,98(8).
APA	Guo, EJ,Gao, J,&Lu, HB.(2011).Strain-mediated electric-field control of photoinduced demagnetization in La0.8Ca0.2MnO3 thin films.APPLIED PHYSICS LETTERS,98(8).
MLA	Guo, EJ,et al."Strain-mediated electric-field control of photoinduced demagnetization in La0.8Ca0.2MnO3 thin films".APPLIED PHYSICS LETTERS 98.8(2011).