Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6

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	Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6
	Yin, WG ; Liu, X ; Tsvelik, AM ; Dean, MPM ; Upton, MH ; Kim, J ; Casa, D ; Said, A ; Gog, T ; Qi, TF ; Cao, G ; Hill, JP
刊名	PHYSICAL REVIEW LETTERS
	2013
卷号	111 期号:5
ISSN号	0031-9007
通讯作者	Yin, WG (reprint author), Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA.
中文摘要	We report a combined experimental and theoretical study of the unusual ferromagnetism in the one-dimensional copper-iridium oxide Sr3CuIrO6. Utilizing Ir L-3 edge resonant inelastic x-ray scattering, we reveal a large gap magnetic excitation spectrum. We find that it is caused by an unusual exchange anisotropy generating mechanism, namely, strong ferromagnetic anisotropy arising from antiferromagnetic superexchange, driven by the alternating strong and weak spin-orbit coupling on the 5d Ir and 3d Cu magnetic ions, respectively. From symmetry consideration, this novel mechanism is generally present in systems with edge-sharing Cu2+O4 plaquettes and Ir4+O6 octahedra. Our results point to unusual magnetic behavior to be expected in mixed 3d - 5d transition-metal compounds via exchange pathways that are absent in pure 3d or 5d compounds.
资助信息	U.S. Department of Energy (DOE), Division of Materials Science [DE-AC02-98CH10886]; DOE, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]; NSF [DMR-0856234]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57014]
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	Yin, WG,Liu, X,Tsvelik, AM,et al. Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6[J]. PHYSICAL REVIEW LETTERS,2013,111(5).
APA	Yin, WG.,Liu, X.,Tsvelik, AM.,Dean, MPM.,Upton, MH.,...&Hill, JP.(2013).Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6.PHYSICAL REVIEW LETTERS,111(5).
MLA	Yin, WG,et al."Ferromagnetic Exchange Anisotropy from Antiferromagnetic Superexchange in the Mixed 3d-5d Transition-Metal Compound Sr3CuIrO6".PHYSICAL REVIEW LETTERS 111.5(2013).