MAGNETIC SUSCEPTIBILITY OF GRAPHENE BY GAUSSIAN CORRECTION

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	MAGNETIC SUSCEPTIBILITY OF GRAPHENE BY GAUSSIAN CORRECTION
	He, PS
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS B
	2011
卷号	25 期号:15 页码:1981
关键词	HEISENBERG-ANTIFERROMAGNET DIRAC FERMIONS TRANSITION
ISSN号	0217-9792
通讯作者	He, PS: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The magnetoresistance (MR){=[R(H) - R(0)]/R(0)} properties in ferromagnetic shape memory alloy of NiMnFeGa ribbons and single crystals, and NiFeGa ribbons have been investigated. It is found that the NiMnFeGa melt-spun ribbon exhibited GMR effect, arising from the spin-dependent scattering from magnetic inhomogeneities consisting of antiferromagnetically coupled Mn atoms in B2 structure. In the absence of these magnetic inhomogeneities, Heusler alloys seem to show a common linear MR behavior at around 0.8T(C), regardless of sample structures. This may be explained by the s-d model. At low temperatures, conventional AMR behaviors due to the spin-orbital coupling are observed. This is most likely due to the diminished MR from s-d model because of much less spin fluctuation, and is not associated with martensite phase. MR anomaly at intermediate field (rho(perpendicular to) > rho(parallel to)) is also observed in single crystal samples, which may be related to unique features of Heusler alloys. (C) 2011 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/41436]
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	He, PS. MAGNETIC SUSCEPTIBILITY OF GRAPHENE BY GAUSSIAN CORRECTION[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,2011,25(15):1981.
APA	He, PS.(2011).MAGNETIC SUSCEPTIBILITY OF GRAPHENE BY GAUSSIAN CORRECTION.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,25(15),1981.
MLA	He, PS."MAGNETIC SUSCEPTIBILITY OF GRAPHENE BY GAUSSIAN CORRECTION".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 25.15(2011):1981.