Electronic correlation-driven orbital polarization transitions in the orbital-selective Mott compound Ba2CuO4-delta
文献类型：期刊论文
| 作者 | Ni, Yu2; Quan, Ya-Min1 ; Liu, Jingyi2; Song, Yun2; Zou, Liang-Jian1
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021-06-14 |
| 卷号 | 103 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.103.214510 |
| 通讯作者 | Song, Yun(yunsong@bnu.edu.cn) |
| 英文摘要 | The electronic states near the Fermi level of recently discovered superconductor Ba2CuO4-delta consist primarily of the Cu d(x2-y2) and d(3z2-r2) orbitals. We investigate the electronic correlation effect and the orbital polarization of an effective two-orbital Hubbard model mimicking the low-energy physics of Ba2CuO4-delta in the hole-rich regime by utilizing the dynamical mean-field theory with the Lanczos method as the impurity solver. We find that the hole-overdoped Ba2CuO4-delta with 3d(8) (Cu3+) is in the orbital-selectiveMott phase (OSMP) at half-filling, and the typical two-orbital feature remains in Ba2CuO4-delta when the electron filling approaches n(e) similar to 2.5, which closely approximates to the experimental hole doping for the emergence of the high-T-c superconductivity. We also obtain that the orbital polarization is very stable in the OSMP, and the multiorbital correlation can drive orbital polarization transitions. These results indicate that in hole-overdoped Ba2CuO4-delta the OSMP physics and orbital polarization, local magnetic moment, and spin or orbital fluctuations still exist. We propose that our present results are also applicable to Sr2CuO4-delta and other two-orbital cuprates, demanding an unconventional multiorbital superconducting scenario in hole-overdoped high-T-c cuprates. |
| WOS关键词 | DYNAMICAL MEAN-FIELD |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11474023] ; National Natural Science Foundation of China (NSFC)[11774350] ; National Natural Science Foundation of China (NSFC)[11174036] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000661528400006 |
| 资助机构 | National Natural Science Foundation of China (NSFC) |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/123926]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Song, Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, POB 1129, Hefei 230031, Peoples R China 2.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ni, Yu,Quan, Ya-Min,Liu, Jingyi,et al. Electronic correlation-driven orbital polarization transitions in the orbital-selective Mott compound Ba2CuO4-delta[J]. PHYSICAL REVIEW B,2021,103. |
| APA | Ni, Yu,Quan, Ya-Min,Liu, Jingyi,Song, Yun,&Zou, Liang-Jian.(2021).Electronic correlation-driven orbital polarization transitions in the orbital-selective Mott compound Ba2CuO4-delta.PHYSICAL REVIEW B,103. |
| MLA | Ni, Yu,et al."Electronic correlation-driven orbital polarization transitions in the orbital-selective Mott compound Ba2CuO4-delta".PHYSICAL REVIEW B 103(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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