Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound

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	Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound; Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound
	Q. Zhang; W. F. Li; N. K. Sun; J. Du; Y. B. Li; D. Li; Y. Q. Zhang; Z. D. Zhang
	2008 ; 2008
发表期刊	Journal of Physics D-Applied Physics ; Journal of Physics D-Applied Physics
ISSN	0022-3727 ; 0022-3727
卷号	41 期号:12
摘要	A large magnetoresistance (MR) is observed in a double helical CoMnSi compound over the entire temperature region from 5 K to the maximum measuring temperature of 380 K, with the largest MR ratio of -18.3% at 245 K and the smallest MR ratio of -5.5% at 85 K at 5 T. This phenomenon is ascribed to two different mechanisms in different temperature regions. The suppressed spin fluctuations of the double helical structure are responsible for the MR below 110 K. However, in consideration of the natural multilayer superstructure of CoMnSi, the larger MR above 110 K is ascribed to the decrease in K-space restrictions when the change in magnetic structure from double helical order to fan order occurs.; A large magnetoresistance (MR) is observed in a double helical CoMnSi compound over the entire temperature region from 5 K to the maximum measuring temperature of 380 K, with the largest MR ratio of -18.3% at 245 K and the smallest MR ratio of -5.5% at 85 K at 5 T. This phenomenon is ascribed to two different mechanisms in different temperature regions. The suppressed spin fluctuations of the double helical structure are responsible for the MR below 110 K. However, in consideration of the natural multilayer superstructure of CoMnSi, the larger MR above 110 K is ascribed to the decrease in K-space restrictions when the change in magnetic structure from double helical order to fan order occurs.
部门归属	[zhang, q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zhang, q (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;qzhangemail@gmail.com ; [zhang, q.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zhang, q (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;qzhangemail@gmail.com
关键词	Giant Magnetoresistance Giant Magnetoresistance Magnetic-structure Magnetic-structure Crystal Crystal Metals Metals
URL	查看原文 ; 查看原文
WOS记录号	WOS:000256568000006 ; WOS:000256568000006
引用统计	被引频次：20[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/321006/33331
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Zhang,W. F. Li,N. K. Sun,et al. Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound, Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound[J]. Journal of Physics D-Applied Physics, Journal of Physics D-Applied Physics,2008, 2008,41, 41(12).
APA	Q. Zhang.,W. F. Li.,N. K. Sun.,J. Du.,Y. B. Li.,...&Z. D. Zhang.(2008).Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound.Journal of Physics D-Applied Physics,41(12).
MLA	Q. Zhang,et al."Large magnetoresistance over an entire region from 5 to 380 K in double helical CoMnSi compound".Journal of Physics D-Applied Physics 41.12(2008).