Chiral magnets have garnered significant interest due to the emergence of unique phenomena prohibited in inversion-symmetric magnets. While the equilibrium characteristics of chiral magnets have been extensively explored through the Dzyaloshinskii-Moriya interaction (DMI), non-equilibrium properties like magnetic damping have received comparatively less attention. We present the inaugural direct observation of chiral damping through Brillouin light scattering (BLS) spectroscopy. Employing BLS spectrum analysis, we independently deduce the Dzyaloshinskii-Moriya interaction (DMI) and chiral damping, extracting them from the frequency shift and linewidth of the spectrum peak, respectively. The resulting linewidths exhibit clear odd symmetry with respect to the magnon wave vector, unambiguously confirming the presence of chiral damping. Our study introduces a novel methodology for quantifying chiral damping, with potential ramifications on diverse nonequilibrium phenomena within chiral magnets.
Understanding Damping Mechanisms via Spin Diffusion Length in Low-damping Li$_{0.5}$Al$_{1.0}$Fe$_{1.5}$O$_4$ Spinel Ferrite Thin Films
Stanford University（斯坦福大学）；SLAC National Accelerator Laboratory（SLAC国家加速器实验室）；University of California, Irvine（加州大学尔湾分校）；University of California San Diego（加州大学圣地亚哥分校）
Divergence between long- and short-wavelength magnon damping in spinel ferrites
Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory（斯坦福材料能源科学研究所，SLAC国家加速器实验室）；Department of Physics and Astronomy, University of Iowa（爱荷华大学物理与天文系）；Department of Physics, Stanford University（斯坦福大学物理系）；Geballe Laboratory for Advanced Materials, Stanford University（斯坦福大学先进材料盖伯实验室）；Department of Applied Physics, Stanford University（斯坦福大学应用物理系）；Department of Materials Science and Engineering, Stanford University（斯坦福大学材料科学与工程系）
A General Theory of Chiral Splitting of Magnons in Two-Dimensional Magnets
School of Materials Science and Physics, China University of Mining and Technology（中国矿业大学材料科学与工程学院）；Jiangsu Physical Science Research Center（江苏省物理科学研究中心）
Spin waves in alloys at finite temperatures: application for FeCo magnonic crystal
从理论上研究了温度和无序度对磁振子晶体Fe $_{1-c}$ Co $_{c}$自旋波谱的影响。我们的形式主义是基于分析的海森堡哈密顿的波矢量和频率依赖的横向磁化率的装置。进入模型的交换积分由\emph{ab initio}磁力定理得到。为了解释有限温度下磁振子谱的软化，我们采用相干势近似处理无序和无规相近似。该合金在自旋电子学应用中表现出许多有利的特性。除了高居里温度外，它的磁振子带隙在高温下保持稳定，并且在很大程度上不受无序的影响。我们特别注意合金化引入的磁振子的衰减。阻尼原来是一个非单调的函数的杂质浓度，由于非平凡的演变的交换积分的值与Co浓度。磁振子的无序诱导阻尼估计比它们的朗道阻尼小得多。
Electric-Switchable Chiral Magnons in PT-Symmetric Antiferromagnets
Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics, School of Physics, Xi’an Jiaotong University（西安交通大学物理学院）；Division of Physics and Applied Physics, School of Physics and Mathematical Sciences, Nanyang Technological University（南洋理工大学物理与数学科学学院）；Department of Physics, University of Science and Technology of China（中国科学技术大学物理系）；Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics, South China Normal University（华南师范大学物理学院）
Magnon chiral damping beyond the Dzyaloshinskii-Moriya interaction
Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau（莱茵兰-普法尔茨技术大学凯泽斯劳滕-兰道分校）；Indian Institute of Technology (Indian School of Mines)（印度理工学院（印度矿业学院））；Uppsala University（乌普萨拉大学）；University of Münster（明斯特大学）
Resonance-enhanced super-superexchange yields giant chiral magnon splitting in rutile altermagnets
University of Delaware（特拉华大学）；Quy Nhon University（归仁大学）；The University of Texas at El Paso（埃尔帕索德克萨斯大学）；National Institute of Standards and Technology（美国国家标准与技术研究院）；University of Maryland, College Park（马里兰大学帕克分校）
Room-temperature magnon-phonon transduction in high-damping Co/Pt structures
Helmholtz-Zentrum Dresden–Rossendorf（德累斯顿-罗斯多夫亥姆霍兹中心）；nextnano Lab（nextnano实验室）；Fritz Haber Institute of the Max Planck Society（马克斯·普朗克学会弗里茨·哈伯研究所）；IT4Innovations, VSB - Technical University of Ostrava（俄斯特拉发技术大学IT4创新研究院）；Charles University（查理大学）；Chemnitz University of Technology（开姆尼茨工业大学）；Dresden University of Technology（德累斯顿工业大学）
Alignment-Dependent Gapless Chiral Split Magnons in Altermagnetic Domain Walls
School of Physics and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China（电子科技大学物理科学与技术学院及电子薄膜与集成器件国家重点实验室）
Observation of Switchable Chiral Magnons in an Altermagnet
Institute for Solid State Physics, the University of Tokyo（东京大学固体物理研究所）；Neutron Scattering Division, Oak Ridge National Laboratory（橡树岭国家实验室中子散射部）；Institut Laue-Langevin（朗之万研究所）；ISIS Neutron and Muon Source, Rutherford Appleton Laboratory（卢瑟福·阿普尔顿实验室ISIS中子和μ子源）；Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory（布鲁克海文国家实验室凝聚态物理与材料科学部）；Institute of Materials Structure Science, High Energy Accelerator Research Organization（高能加速器研究机构物质结构科学研究所）；Trans-scale Quantum Science Institute, the University of Tokyo（东京大学跨尺度量子科学研究所）
Spin Inertia as a Source of Topological Magnons: Chiral Edge States from Coupled Precession and Nutation
Indian Institute of Technology (Indian School of Mines)（印度理工学院（印度矿业学院））；RWTH Aachen University（亚琛工业大学）；University of Münster（明斯特大学）；HUN-REN Wigner Research Centre for Physics（匈牙利研究网络维格纳物理研究中心）；Budapest University of Technology and Economics（布达佩斯技术与经济大学）
