Two-magnon Raman scattering in A(0.8)Fe(1.6)Se(2) systems (A = K, Rb, Cs, and Tl): Competition between superconductivity and antiferromagnetic order
文献类型：期刊论文
| 作者 | Zhang, AM ; Xiao, JH ; Li, YS ; He, JB ; Wang, DM ; Chen, GF ; Normand, B ; Zhang, QM ; Xiang, T |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:21 |
| 关键词 | PHASE-SEPARATION |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhang, AM (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China. |
| 中文摘要 | We performed Raman-scattering measurements on high-quality single crystals of A(0.8)Fe(1.6)Se(2) superconductors of several compositions. We found a broad, asymmetric peak around 1600 cm(-1) (200 meV), which we identify as a two-magnon process involving optical magnons. The intensity of the two-magnon peak falls sharply on entering the superconducting phase. This effect, which is entirely absent in the non-superconducting system KFe1.5Se2, requires a strong mutual exclusion between antiferromagnetism and superconductivity arising from proximity effects within regions of microscale phase separation. |
| 收录类别 | SCI |
| 资助信息 | 973 program [2011CBA00112]; NSF of China [10874215, 10934008, 11034012]; Fundamental Research Funds for Central Universities; RUC |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46273]  |
| 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 | Zhang, AM,Xiao, JH,Li, YS,et al. Two-magnon Raman scattering in A(0.8)Fe(1.6)Se(2) systems (A = K, Rb, Cs, and Tl): Competition between superconductivity and antiferromagnetic order[J]. PHYSICAL REVIEW B,2012,85(21). |
| APA | Zhang, AM.,Xiao, JH.,Li, YS.,He, JB.,Wang, DM.,...&Xiang, T.(2012).Two-magnon Raman scattering in A(0.8)Fe(1.6)Se(2) systems (A = K, Rb, Cs, and Tl): Competition between superconductivity and antiferromagnetic order.PHYSICAL REVIEW B,85(21). |
| MLA | Zhang, AM,et al."Two-magnon Raman scattering in A(0.8)Fe(1.6)Se(2) systems (A = K, Rb, Cs, and Tl): Competition between superconductivity and antiferromagnetic order".PHYSICAL REVIEW B 85.21(2012). |
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来源：物理研究所
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