Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x)
文献类型：期刊论文
| 作者 | Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China; Li, Shiliang; Zhang, Chenglin; Wang, Meng; Luo, Hui-qian; Faulhaber, Enrico; Schneidewind, Astrid; Link, Peter; Hu, Jiangping; Lu, Xingye |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2010 |
| 卷号 | 105期号:15页码:- |
| 关键词 | Temperature Superconductor |
| ISSN号 | 0031-9007 |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5032]  |
| 专题 | 理论物理研究所_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, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China,Li, Shiliang,Zhang, Chenglin,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, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.,Li, Shiliang.,Zhang, Chenglin.,Wang, Meng.,Luo, Hui-qian.,...&Dai, Pengcheng.(2010).Normal-State Hourglass Dispersion of the Spin Excitations in FeSe(x)Te(1-x).PHYSICAL REVIEW LETTERS,105(15),-. |
| MLA | Li, SL , Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China,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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来源：理论物理研究所
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