A critical point in Sr2-xIrO4 and less distorted IrO6 octahedra induced by deep Sr-vacancies
文献类型：期刊论文
| 作者 | Liu, SL ; Xu W(徐伟); Xu, W; Wang, Y; Wang, HY; Li, B; Zhu, CM; Cheng, J
|
| 刊名 | MATERIALS RESEARCH BULLETIN
 |
| 出版日期 | 2017 |
| 卷号 | 90页码:1-7 |
| 关键词 | Sr2IrO4 X-ray absorption spectroscopy A critical point Local structure |
| ISSN号 | 0025-5408 |
| DOI | 10.1016/j.materresbull.2017.02.013 |
| 文献子类 | Article |
| 英文摘要 | For the Sr(2-x)lrO(4) system, recent work pointed out the abnormal electronic and magnetic properties around a critical point. Here, to understand Sr-vacancy effect on spin-orbit coupled Mott insulator Sr2IrO4, the electronic structure and local structure distortion for Sr2-xIrO4 system have been investigated by x-ray absorption spectroscopy (XAS). By comparing the intensity of white-line features at the Ir L-2,L-3-edge x-ray absorption near-edge spectroscopy (XANES), we observe a sudden rise of the branching ratio in the vicinity of the critical point. Further analysis on the Ir L-3-edge extended x-ray absorption fine structure (EXAFS) and calculated data demonstrated that the abrupt enhancement of the branching ratio is intimately related to the less distorted Iro(6) octahedra induced by deep Sr-vacancies, which in turn alters the relatively strength of the spin-orbit coupling (SOC) and crystal electric field (CEF) that would dictate the abnormal behavior of electronic and magnetic structure near the critical point. (C) 2017 Elsevier Ltd. All rights reserved. |
| 电子版国际标准刊号 | 1873-4227 |
| WOS关键词 | SPIN-ORBIT INTERACTION ; SR2IRO4 |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000401218400001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285203]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, SL,Xu W,Xu, W,et al. A critical point in Sr2-xIrO4 and less distorted IrO6 octahedra induced by deep Sr-vacancies[J]. MATERIALS RESEARCH BULLETIN,2017,90:1-7. |
| APA | Liu, SL.,徐伟.,Xu, W.,Wang, Y.,Wang, HY.,...&Cheng, J.(2017).A critical point in Sr2-xIrO4 and less distorted IrO6 octahedra induced by deep Sr-vacancies.MATERIALS RESEARCH BULLETIN,90,1-7. |
| MLA | Liu, SL,et al."A critical point in Sr2-xIrO4 and less distorted IrO6 octahedra induced by deep Sr-vacancies".MATERIALS RESEARCH BULLETIN 90(2017):1-7. |
入库方式： OAI收割
来源：高能物理研究所
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