Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x)

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	Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x)
	Li, Shiliang; Zhang, Chenglin; Wang, Meng; Luo, Hui-qian; Lu, Xingye; Faulhaber, Enrico; Schneidewind, Astrid; Link, Peter; Hu, Jiangping; Xiang, Tao; Dai, Pengcheng; Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
	2010
发表期刊	PHYSICAL REVIEW LETTERS
ISSN	0031-9007
卷号	105 期号:15 页码:-
摘要	We use cold neutron spectroscopy to study the low-energy spin excitations of superconducting (SC) FeSe(0.4)Te(0.6) and essentially nonsuperconducting (NSC) FeSe(0.45)Te(0.55). In contrast with BaFe(2-x)(Co, Ni)(x)As(2), where the low-energy spin excitations are commensurate both in the SC and normal state, the normal-state spin excitations in SC FeSe(0.4)Te(0.6) are incommensurate and show an hourglass dispersion near the resonance energy. Since similar hourglass dispersion is also found in the NSC FeSe(0.45)Te(0.55), we argue that the observed incommensurate spin excitations in FeSe(1-x)Te(x) are not directly associated with superconductivity. Instead, the results can be understood within a picture of Fermi surface nesting assuming extremely low Fermi velocities and spin-orbital coupling.
部门归属	[Li, SL; Wang, M; Luo, HQ; Lu, XY; Hu, JP; Xiang, T; Dai, PC] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China; [Zhang, CL; Wang, M; Dai, PC] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA; [Faulhaber, E; Schneidewind, A] Gemeinsame Forsch Grp HZB TU Dresden, Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany; [Faulhaber, E; Schneidewind, A] TU Mnchen, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85747 Garching, Germany; [Hu, JP] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA; [Xiang, T] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Dai, PC] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA
关键词	Temperature Superconductor
学科领域	Physics
资助者	Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities
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收录类别	SCI
资助者	Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities ; Chinese Academy of Science[2010CB833102]; US DOE, BES, through DOE[DE-FG02-05ER46202]; US DOE, BES, through Division of Scientific User Facilities
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/5032
专题	理论物理所1978-2010年知识产出
通讯作者	Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Shiliang,Zhang, Chenglin,Wang, Meng,et al. Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x)[J]. PHYSICAL REVIEW LETTERS,2010,105(15):-.
APA	Li, Shiliang.,Zhang, Chenglin.,Wang, Meng.,Luo, Hui-qian.,Lu, Xingye.,...&Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.(2010).Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x).PHYSICAL REVIEW LETTERS,105(15),-.
MLA	Li, Shiliang,et al."Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x)".PHYSICAL REVIEW LETTERS 105.15(2010):-.

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