Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization

doi:10.1103/PhysRevB.104.165145

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	Three-dimensional stacking of canted antiferromagnetism and pseudospin current in undoped Sr2IrO4: Symmetry analysis and microscopic model realization
	Huang, Yun-Peng ; Dong, Jin-Wei ; Wang, Ziqiang 2; Zhou, Sen 1,3
刊名	PHYSICAL REVIEW B
	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
内容类型	期刊论文
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.