Suppression of photoconductivity by magnetic field in epitaxial manganite thin films

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	Suppression of photoconductivity by magnetic field in epitaxial manganite thin films
	Guo, EJ ; Wang, L ; Lu, HB ; Guo, HZ ; He, M ; Jin, KJ ; Yang, GZ ; Gao, J
刊名	APPLIED PHYSICS LETTERS
	2012
卷号	100 期号:6
关键词	PHASE MAGNETORESISTANCE LA0.7CA0.3MNO3 LA1-XCAXMNO3 CHARGE
ISSN号	0003-6951
通讯作者	Lu, HB (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The erasure of photoinduced resistance (PR) by the magnetic field was investigated in manganite films. The PR was significantly suppressed when a magnetic field was introduced at low temperature. The decrease (or increase) of PR with increment of magnetic field was observed in ferromagnetic (or paramagnetic) phases of films, respectively. Our results are suggested to be the coaction of two effects under magnetic fields: (i) the reorientation of domains and spin directions of photoexcited carriers and (ii) electrons trapped around oxygen vacancies released and recombined with majority carriers in films. The interplay of the external fields is a good demonstration of the strong coupling between spins and charges in colossal magnetoresistance materials. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3683551]
收录类别	SCI
资助信息	National Natural Science Foundation of China; National Basic Research Program of China; Research Grant Council of Hong Kong [HKU702409P]; URC of the 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/311004/54139]
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,Wang, L,Lu, HB,et al. Suppression of photoconductivity by magnetic field in epitaxial manganite thin films[J]. APPLIED PHYSICS LETTERS,2012,100(6).
APA	Guo, EJ.,Wang, L.,Lu, HB.,Guo, HZ.,He, M.,...&Gao, J.(2012).Suppression of photoconductivity by magnetic field in epitaxial manganite thin films.APPLIED PHYSICS LETTERS,100(6).
MLA	Guo, EJ,et al."Suppression of photoconductivity by magnetic field in epitaxial manganite thin films".APPLIED PHYSICS LETTERS 100.6(2012).