Current dependence of the magnetoresistance in a colloidal-sphere-masked ion-milled La0.67Sr0.33MnO3 thin film

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	Current dependence of the magnetoresistance in a colloidal-sphere-masked ion-milled La0.67Sr0.33MnO3 thin film
	Li, J ; Zheng, DN ; Rao, XS ; Sow, CH ; Chen, L ; Ong, CK
刊名	EUROPHYSICS LETTERS
	2004
卷号	65 期号:6 页码:823
关键词	LOW-FIELD MAGNETORESISTANCE DOMAIN-WALL NANOCONTACTS MANGANITES LA0.7CA0.3MNO3 TEMPERATURE
ISSN号	0295-5075
通讯作者	Li, J: Chinese Acad Sci, Natl Lab Superconduct, Inst Phys, Beijing 100080, Peoples R China.
中文摘要	An epitaxial La0.67Sr0.33MnO3 thin film covered with a monolayer of colloidal spheres was ion-milled so that structural discontinuities were involved. Nonlinear V-I characteristics have been observed, revealing that the zero-field resistance of the sample decreases with increasing measuring current I. In a magnetic field, however, the resistance varies non-monotonically with I. An inflexion appears around I = 50 nA. Accordingly, the magnetoresistance also correlates with I. A maximum value as high as -700% (DeltaR/R-H) is recorded at liquid nitrogen in 1.5 T when I = I nA. The drastic current dependence of the magnetoresistance is believed to come from the ion-milling-induced structural and magnetic disorders and to be related to the inelastic scattering of the spin-polarized electrons at the disorders. The possible underlying mechanisms are discussed in detail.
收录类别	SCI
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/311004/35565]
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	Li, J,Zheng, DN,Rao, XS,et al. Current dependence of the magnetoresistance in a colloidal-sphere-masked ion-milled La0.67Sr0.33MnO3 thin film[J]. EUROPHYSICS LETTERS,2004,65(6):823.
APA	Li, J,Zheng, DN,Rao, XS,Sow, CH,Chen, L,&Ong, CK.(2004).Current dependence of the magnetoresistance in a colloidal-sphere-masked ion-milled La0.67Sr0.33MnO3 thin film.EUROPHYSICS LETTERS,65(6),823.
MLA	Li, J,et al."Current dependence of the magnetoresistance in a colloidal-sphere-masked ion-milled La0.67Sr0.33MnO3 thin film".EUROPHYSICS LETTERS 65.6(2004):823.