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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
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| Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x) | |
| Source Publication | PHYSICAL REVIEW LETTERS
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| Keyword | Temperature Superconductor |
| Abstract | 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. |
| 2010 | |
| ISSN | 0031-9007 |
| Volume | 105Issue:15Pages:- |
| Subject Area | Physics |
| Indexed By | SCI |
| Funding Organization | 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 |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/5032 |
| Collection | SCI期刊论文 |
| Corresponding Author | Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| Recommended Citation 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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| Normal-State Hourgla（573KB） | 开放获取 | License | Application Full Text | |||
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