Electronic and magnetic structures of chain structured iron selenide compounds
文献类型：期刊论文
| 作者 | Li, W ; Setty, C ; Chen, XH ; Hu, JP |
| 刊名 | FRONTIERS OF PHYSICS
 |
| 出版日期 | 2014 |
| 卷号 | 9期号:4页码:465 |
| 关键词 | first-principles calculations magnetism spin-wave excitations |
| ISSN号 | 2095-0462 |
| 通讯作者 | Hu, JP (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Electronic and magnetic structures of iron selenide compounds Ce2O2FeSe2 (2212*) and BaFe2Se3 (123*) are studied by the first-principles calculations. We find that while all these compounds are composed of one-dimensional (1D) Fe chain (or ladder) structures, their electronic structures are not close to be quasi-1D. The magnetic exchange couplings between two nearest-neighbor (NN) chains in 2212* and between two NN two-leg-ladders in 123* are both antiferromagnetic (AFM), which is consistent with the presence of significant third NN AFM coupling, a common feature shared in other iron-chalcogenides, FeTe (11*) and K (y) Fe2-x Se-2 (122*). In magnetic ground states, each Fe chain of 2212* is ferromagnetic and each two-leg ladder of 123* form a block-AFM structure. We suggest that all magnetic structures in iron-selenide compounds can be unified into an extended J (1)-J (2)-J (3) model. Spin-wave excitations of the model are calculated and can be tested by future experiments on these two systems. |
| 资助信息 | National Basic Research Program of China (973 Project) [2012CB821400]; Chinese Academy of Sciences [XDB04010600]; National Natural Science Foundation of China [11227902, 11190024]; Shanghai Yang-Fan Program [14YF1407100] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59084]  |
| 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 | Li, W,Setty, C,Chen, XH,et al. Electronic and magnetic structures of chain structured iron selenide compounds[J]. FRONTIERS OF PHYSICS,2014,9(4):465. |
| APA | Li, W,Setty, C,Chen, XH,&Hu, JP.(2014).Electronic and magnetic structures of chain structured iron selenide compounds.FRONTIERS OF PHYSICS,9(4),465. |
| MLA | Li, W,et al."Electronic and magnetic structures of chain structured iron selenide compounds".FRONTIERS OF PHYSICS 9.4(2014):465. |
入库方式： OAI收割
来源：物理研究所
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