Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2

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	Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2
	Wang, MY ; Fang, C ; Yao, DX ; Tan, GT ; Harriger, LW ; Song, Y ; Netherton, T ; Zhang, CL ; Wang, M ; Stone, MB ; Tian, W ; Hu, JP ; Dai, PC
刊名	NATURE COMMUNICATIONS
	2011
卷号	2
关键词	SUPERCONDUCTIVITY
ISSN号	2041-1723
通讯作者	Dai, PC (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
中文摘要	The parent compounds of iron pnictide superconductors are bad metals with a collinear antiferromagnetic structure and Neel temperatures below 220 K. Although alkaline iron selenide A(y)Fe(1.6+x)Se(2) (A = K, Rb, Cs) superconductors are isostructural with iron pnictides, in the vicinity of the undoped limit they are insulators, forming a block antiferromagnetic order and having Neel temperatures of roughly 500 K. Here we show that the spin waves of the insulating antiferromagnet Rb0.89Fe1.58Se2 can be accurately described by a local moment Heisenberg Hamiltonian. A fitting analysis of the spin wave spectra reveals that the next-nearest neighbour couplings in Rb0.89Fe1.58Se2, (Ba,Ca,Sr)Fe2As2, and Fe1.05Te are of similar magnitude. Our results suggest a common origin for the magnetism of all the Fe-based superconductors, despite having different ground states and antiferromagnetic orderings.
收录类别	SCI
资助信息	US NSF [DMR-1063866, OISE-0968226]; US DOE BES [DE-FG02-05ER46202]; US DOE, Division of Scientific User Facilities; Chinese Academy of Sciences; Ministry of Science and Technology of China [2012CB821400]; NSFC [11074310]
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/311004/52903]
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	Wang, MY,Fang, C,Yao, DX,et al. Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2[J]. NATURE COMMUNICATIONS,2011,2.
APA	Wang, MY.,Fang, C.,Yao, DX.,Tan, GT.,Harriger, LW.,...&Dai, PC.(2011).Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2.NATURE COMMUNICATIONS,2.
MLA	Wang, MY,et al."Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2".NATURE COMMUNICATIONS 2(2011).