Static and dynamical properties of the spin-52 nearly ideal triangular lattice antiferromagnet Ba3MnSb2O9

被引：4

作者：

Shu, Mingfang ^{[1
,2
]}

Dong, Weicen ^{[1
,2
]}

Jiao, Jinlong ^{[1
,2
]}

Wu, Jiangtao ^{[1
,2
]}

Lin, Gaoting ^{[1
,2
]}

Kamiya, Yoshitomo ^{[1
,2
]}

Hong, Tao ^{[3
]}

Cao, Huibo ^{[3
]}

Matsuda, Masaaki ^{[3
]}

Tian, Wei ^{[3
]}

Chi, Songxue ^{[3
]}

Ehlers, G. ^{[3
]}

Ouyang, Zhongwen ^{[4
]}

Chen, Hongwei ^{[5
,7
]}

Zou, Youming ^{[5
]}

Qu, Zhe ^{[5
]}

Huang, Qing ^{[6
,8
]}

Zhou, Haidong ^{[6
]}

Ma, Jie ^{[1
,2
,4
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, Key Lab Artificial Struct & Quantum Control, Shanghai 200240, Peoples R China

[2] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[3] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA

[4] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China

[5] Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China

[6] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[7] China Jiliang Univ, Coll Mat Sci & Chem, Hangzhou 310018, Peoples R China

[8] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

PHYSICAL REVIEW B | 2023年 / 108卷 / 17期

基金：

美国国家科学基金会;

关键词：

HIGH-FIELD MAGNETIZATION; HEISENBERG-ANTIFERROMAGNET; EXCITATIONS; DIAGONALIZATION; RESONANCE; PHASE; ESR;

D O I：

10.1103/PhysRevB.108.174424

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the ground state and spin excitations in Ba3MnSb2O9, an easy-plane S = 5/2 triangular lattice antiferromagnet. By combining single-crystal neutron scattering, electric spin resonance (ESR), and spin wave calculations, we determine the frustrated quasi-two-dimensional spin Hamiltonian parameters describing the material. While the material has a slight monoclinic structural distortion, which could allow for isoscelestriangular exchanges and biaxial anisotropy by symmetry, we observe no deviation from the behavior expected for spin waves in the in-plane 120 degrees state. Even the easy-plane anisotropy is so small that it can only be detected by ESR in our study. In conjunction with the quasitwo dimensionality, our study establishes that Ba3MnSb2O9 is a nearly ideal triangular lattice antiferromagnet with the quasiclassical spin S = 5/2, which suggests that it has the potential for an experimental study of Z- or Z2-vortex excitations.

引用

页数：12

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