A critical point in Sr2-xIrO4and less distorted IrO6octahedra induced by deep Sr-vacancies
文献类型：期刊论文
| 作者 | Cheng, Jie1; Zhu, Chaomin2; Liu, Shengli1,3; Li, Bin1; Wang, Haiyun1; Wang, Yu4; Xu, Wei5,6 |
| 刊名 | Materials Research Bulletin
 |
| 出版日期 | 2017 |
| 卷号 | 90页码:1-7 |
| ISSN号 | 00255408 |
| DOI | 10.1016/j.materresbull.2017.02.013 |
| 英文摘要 | For the Sr2-xIrO4system, 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-xIrO4system have been investigated by x-ray absorption spectroscopy (XAS). By comparing the intensity of white-line features at the Ir L2,3-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 L3-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 IrO6octahedra 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. © 2017 Elsevier Ltd |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25511]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.College of Science, Center of Advanced Functional Ceramics, Nanjing University of Posts and Telecommunications, Nanjing; Jiangsu; 210023, China; 2.College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing; Jiangsu; 210023, China; 3.Nanjing University (Suzhou) High-Tech Institute, Suzhou; 215123, China; 4.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201204, China; 5.Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; 6.Rome International Center for Materials Science, Superstripes, RICMASS, via dei Sabelli 119A, I-00185, Roma, Italy |
| 推荐引用方式 GB/T 7714 | Cheng, Jie,Zhu, Chaomin,Liu, Shengli,et al. A critical point in Sr2-xIrO4and less distorted IrO6octahedra induced by deep Sr-vacancies[J]. Materials Research Bulletin,2017,90:1-7. |
| APA | Cheng, Jie.,Zhu, Chaomin.,Liu, Shengli.,Li, Bin.,Wang, Haiyun.,...&Xu, Wei.(2017).A critical point in Sr2-xIrO4and less distorted IrO6octahedra induced by deep Sr-vacancies.Materials Research Bulletin,90,1-7. |
| MLA | Cheng, Jie,et al."A critical point in Sr2-xIrO4and less distorted IrO6octahedra induced by deep Sr-vacancies".Materials Research Bulletin 90(2017):1-7. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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