Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization
文献类型：期刊论文
| 作者 | Huang, Yun-Peng; Dong, Jin-Wei; Wang, Ziqiang2; Zhou, Sen1,3
|
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021 |
| 卷号 | 104期号:16页码:165145 |
| 关键词 | PHYSICS |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.104.165145 |
| 英文摘要 | Recent optical second-harmonic generation experiments observed unexpected broken spatial symmetries in the undoped spin-orbit Mott insulator Sr2IrO4, leading to intensive debates on the nature of its ground state. We propose that it is a canted antiferromagnetism (CAF) with a hidden order of circulating staggered pseudospin current. Symmetry analysis shows that a proper c-axis stacking of the CAF and the pseudospin current lead to a magnetoelectric coexistence state that breaks the twofold rotation, inversion, and time-reversal symmetries, consistent with experimental observations. We construct a three-dimensional Hubbard model with spin-orbit coupling and structural distortion for the five localized 5d Wannier orbitals centered at Ir sites and demonstrate the microscopic realization of the desired coexistence state in a wide range of band parameters via a combination of self-consistent Hartree-Fock and variational calculations. |
| 学科主题 | Materials Science ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27675]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA 4.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Yun-Peng,Dong, Jin-Wei,Wang, Ziqiang,et al. Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization[J]. PHYSICAL REVIEW B,2021,104(16):165145. |
| APA | Huang, Yun-Peng,Dong, Jin-Wei,Wang, Ziqiang,&Zhou, Sen.(2021).Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization.PHYSICAL REVIEW B,104(16),165145. |
| MLA | Huang, Yun-Peng,et al."Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization".PHYSICAL REVIEW B 104.16(2021):165145. |
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来源：理论物理研究所
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