Dynamical mean-field theory of two-orbital Hubbard model
文献类型：期刊论文
| 作者 | Ni Yu3; Jian, Sun2; Quan Ya-Min1 ; Luo Dong-Qi3; Song Yun3
|
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2022-07-20 |
| 卷号 | 71 |
| 关键词 | dynamical mean-filed theory Mott transition two-orbital Hubbard model |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.71.20220286 |
| 通讯作者 | Song Yun(yunsong@bnu.edu.cn) |
| 英文摘要 | The effect of interorbital hopping on orbital selective Mottness in a two-band correlation system is investigated by using the dynamical mean-field theory with the Lanczos method as impurity solver. The phase diagrams of the two-orbital Hubbard model with non-local interorbital hopping (t(12)), where the orbital selective Mott phases (OSMP) region is expanded by the increasing of the interorbital hopping. We compare the results obtained by self-consistent relations of Bethe lattice and squate lattice based on DMFT procedure, and the general OSMP physics of Bethe lattice is consistent with that of the square lattice while the critical points of two kinds of lattices are different. We extend the method to the study of half-filled Ba2CuO4-delta materials. By comparing with the band structure obtained from the density functional theory (DFT), it is found that the isotropic inter-orbital hopping has a great influence on the bandstructure. The DFT bandstructure in DMFT is considered, and the phase diagram of the material is obtained. The half-filled Ba2CuO4-delta should be orbitalselective Mott compound according to our results. |
| WOS关键词 | RENORMALIZATION-GROUP ; INSULATOR-TRANSITION ; MOTT-INSULATOR ; ELECTRONS ; SYSTEMS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000838518900013 |
| 出版者 | CHINESE PHYSICAL SOC |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/132081]  |
| 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, Key Lab Mat Phys, Inst Solid State Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 3.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ni Yu,Jian, Sun,Quan Ya-Min,et al. Dynamical mean-field theory of two-orbital Hubbard model[J]. ACTA PHYSICA SINICA,2022,71. |
| APA | Ni Yu,Jian, Sun,Quan Ya-Min,Luo Dong-Qi,&Song Yun.(2022).Dynamical mean-field theory of two-orbital Hubbard model.ACTA PHYSICA SINICA,71. |
| MLA | Ni Yu,et al."Dynamical mean-field theory of two-orbital Hubbard model".ACTA PHYSICA SINICA 71(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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