ORBITAL ORDERINGS AND OPTICAL CONDUCTIVITY IN Cs2AgF4
文献类型：期刊论文
| 作者 | Zhang, MP ; Qian, YM ; Wang, GT |
| 刊名 | MODERN PHYSICS LETTERS B
 |
| 出版日期 | 2010 |
| 卷号 | 24期号:1页码:39 |
| 关键词 | TRANSITION-METAL OXIDES ELECTRONIC-STRUCTURE PSEUDOPOTENTIALS MAGNETISM |
| ISSN号 | 0217-9849 |
| 通讯作者 | Zhang, MP (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China. |
| 中文摘要 | The Jahn-Teller (JT) distortion induced orbital order and optical-conductivity in Cs2AgF4 are investigated by first-principle calculations. Cs2AgF4 contains 4d(9) Ag2+, similar to 3d(9) Cu2+ of La2CuO4. Although Cs2AgF4 is an isoelectronic analogue of La2CuO4, their magnetisms are radically different: La2CuO4 is antiferromagnetism (AFM), while Cs2AgF4 is proposed to be ferromagnetism (FM) based on recent neutrons cattering data. The great difference can be understood from the JT distortions in the AgF6 octahedron, which favors the formation of staggered orbital order of d(z2) (x2) and d(z2-y2). Such orbital order favors FM state, according to Goodenough-Kanamori Rules. We find when the JT distortion is larger than 0.03, the ground state of Cs2AgF4 is AFM. This antiferromagnetism might induce superconductivity, just as La2CuO4. In order to confirm such orbital order of Ag, we present the calculated optical-conductivity, which could be examined by experiment. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [10947001] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50420]  |
| 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 | Zhang, MP,Qian, YM,Wang, GT. ORBITAL ORDERINGS AND OPTICAL CONDUCTIVITY IN Cs2AgF4[J]. MODERN PHYSICS LETTERS B,2010,24(1):39. |
| APA | Zhang, MP,Qian, YM,&Wang, GT.(2010).ORBITAL ORDERINGS AND OPTICAL CONDUCTIVITY IN Cs2AgF4.MODERN PHYSICS LETTERS B,24(1),39. |
| MLA | Zhang, MP,et al."ORBITAL ORDERINGS AND OPTICAL CONDUCTIVITY IN Cs2AgF4".MODERN PHYSICS LETTERS B 24.1(2010):39. |
入库方式： OAI收割
来源：物理研究所
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