Vacancy ordering and phonon spectrum of the iron-based superconductor K0.8Fe1.6Se2
文献类型：期刊论文
| 作者 | Zhang, AM ; Liu, K ; Xiao, JH ; He, JB ; Wang, DM ; Chen, GF ; Normand, B ; Zhang, QM |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 85期号:2 |
| 关键词 | AUGMENTED-WAVE METHOD |
| 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 have performed Raman-scattering measurements on a high-quality single crystal of the recently discovered Fe-based superconductor K0.8Fe1.6Se2 (T-c = 32 K). At least 13 phonon modes were observed in the wave number range 10-300 cm(-1). The spectra possess a fourfold symmetry indicative of bulk vacancy order in the Fe-deficient planes. We perform a vibration analysis based on first-principles calculations, which both confirms the ordered structure and allows a complete mode assignment. We observe an anomaly at T-c in the 180 cm(-1) A(g) mode, which indicates a rather specific type of electron-phonon coupling. |
| 收录类别 | SCI |
| 资助信息 | 973 program [2011CBA00112]; NSF of China [11034012, 11004243]; Fundamental Research Funds for Central Universities; Renmin University |
| 语种 | 英语 |
| 公开日期 | 2014-02-20 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57804]  |
| 专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, AM,Liu, K,Xiao, JH,et al. Vacancy ordering and phonon spectrum of the iron-based superconductor K0.8Fe1.6Se2[J]. PHYSICAL REVIEW B,2012,85(2). |
| APA | Zhang, AM.,Liu, K.,Xiao, JH.,He, JB.,Wang, DM.,...&Zhang, QM.(2012).Vacancy ordering and phonon spectrum of the iron-based superconductor K0.8Fe1.6Se2.PHYSICAL REVIEW B,85(2). |
| MLA | Zhang, AM,et al."Vacancy ordering and phonon spectrum of the iron-based superconductor K0.8Fe1.6Se2".PHYSICAL REVIEW B 85.2(2012). |
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来源：物理研究所
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