Two spatially separated phases in semiconducting Rb0.8Fe15S2
文献类型：期刊论文
| 作者 | Wang, M ; Tian, W ; Valdivia, P ; Chi, SX ; Bourret-Courchesne, E ; Dai, PC ; Birgeneau, RJ |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:12 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, M (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. |
| 中文摘要 | We report neutron scattering and transport measurements on semiconducting Rb08Fe1.552, a compound isostructural and isoelectronic to the well-studied A(0.8)Fe(15)S(2) (A = K, Rb, Cs, Tl/K) superconducting systems. Both resistivity and dc susceptibility measurements reveal a magnetic phase transition at T = 275 K. Neutron diffraction studies show that the 275 K transition originates from a phase with rhombic iron vacancy order which exhibits an in-plane stripe antiferromagnetic ordering below 275 K. In addition, the stripe antiferromagnetic phase interdigitates mesoscopically with an ubiquitous phase with root 5 x root 5 iron vacancy order. This phase has a magnetic transition at T-N = 425 K and an iron vacancy order-disorder transition at Ts = 600 K. These two different structural phases are closely similar to those observed in the isomorphous Se materials. Based on the close similarities of the in-plane antiferromagnetic structures, moments sizes, and ordering temperatures in semiconducting Rb0.8Fe15S2 and Rb0.8Fe15S2, we argue that the in-plane antiferromagnetic order arises from strong coupling between local moments. Superconductivity, previously observed in the A(0.8)Fe(15)S(2) system, is absent in Rb0.8Fe15S2, which has a semiconducting ground state. The implied relationship between stripe and block antiferromagnetism and superconductivity in these materials as well as a strategy for further investigation is discussed in this paper. |
| 资助信息 | Office of Science, Office of Basic Energy Sciences, US Department of Energy [DE-AC02-05CH11231]; Office of Basic Energy Sciences US DOE [DE-AC03-76SF008]; Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy; US NSF [DMR-1362219]; Robert A. Welch Foundation at Rice University [C-1839] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59507]  |
| 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 | Wang, M,Tian, W,Valdivia, P,et al. Two spatially separated phases in semiconducting Rb0.8Fe15S2[J]. PHYSICAL REVIEW B,2014,90(12). |
| APA | Wang, M.,Tian, W.,Valdivia, P.,Chi, SX.,Bourret-Courchesne, E.,...&Birgeneau, RJ.(2014).Two spatially separated phases in semiconducting Rb0.8Fe15S2.PHYSICAL REVIEW B,90(12). |
| MLA | Wang, M,et al."Two spatially separated phases in semiconducting Rb0.8Fe15S2".PHYSICAL REVIEW B 90.12(2014). |
入库方式： OAI收割
来源：物理研究所
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