The light-induced femtosecond dynamics of the sublattice magnetizations in the antiferromagnetically ordered phase of the semiconductor $α$-MnTe is investigated theoretically as function of an external driving field. The electromagnetic field is coupled to optical modes and the concomitant atomic displacements modulate the Heisenberg exchange couplings. We derive the equations of motion for the time-dependent sublattice magnetization in spin wave theory and analyze the contributions from the driven magnon modes. The antiferromagnetic order parameter exhibits coherent longitudinal oscillations determined by the external driving frequency which decay due to dephasing. Including a phenomenological dissipative term to mimic spin-lattice relaxation processes leads to relaxation back to thermal equilibrium. We provide approximate analytic solutions of the resulting differential equations which allow us to understand the effect of the driving light pulse on the amplitude, frequency, and lifetime of the coherent spin dynamics.
Magnetic Field Control of the Néel Vector and Magnon Visibility in Altermagnetic MnTe
Institut Laue-Langevin (ILL)（劳厄-朗之万研究所）；California Institute of Technology（加州理工学院）；University of Michigan（密歇根大学）；University of South Florida（南佛罗里达大学）；European Spallation Source (ESS)（欧洲散裂源）
Plaid-Like Spin Splitting and Chirality of Magnon Bands in Antiferromagnetic MnTe$_2$
Sejong University（世宗大学）；Korea Advanced Institute of Science and Technology (KAIST)（韩国科学技术院）；Sungkyunkwan University（成均馆大学）；Institute of Physics, Academia Sinica（中央研究院物理研究所）
Towards the First Realization of Weyl Magnons in the Non-Coplanar Antiferromagnet MnTe$_2$
The Ohio State University（俄亥俄州立大学）；National Institute of Standards and Technology（美国国家标准与技术研究院）；Oak Ridge National Laboratory（橡树岭国家实验室）；Duke University（杜克大学）
Pseudo-Goldstone mode in altermagnetic $α$-MnTe: high-field electron spin resonance studies
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)（德累斯顿-罗森多夫亥姆霍兹中心）；Technische Universität Dresden（德累斯顿工业大学）；University of Leipzig（莱比锡大学）；Max Planck Institute for Chemical Physics of Solids（马克斯·普朗克固体化学物理研究所）
Magnetic-field-induced detwinning of orientational domains in altermagnet $α$-MnTe: A single-crystal neutron diffraction study
Jülich Centre for Neutron Science (JCNS) at the Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich（于海因茨·迈尔-莱布尼茨中心（MLZ）的于利希中子科学中心（JCNS），于利希研究中心）
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）
Photoengineering the Magnon Spectrum in an Insulating Antiferromagnet
Radboud University, Institute for Molecules and Materials（拉德堡德大学分子与材料研究所）；Institute for Theoretical Physics, ETH Zurich（苏黎世联邦理工学院理论物理研究所）；Kavli Institute of Nanoscience, Delft University of Technology（代尔夫特理工大学卡弗里纳米科学研究所）；Electromagnetic Signatures and Propagation, TNO（TNO电磁特征与传播部门）；Department of Physics, Lancaster University（兰开斯特大学物理系）；Dipartimento di Fisica “E. R. Caianiello”, Università degli Studi di Salerno and CNR-SPIN（萨莱诺大学“E.R.凯亚内洛”物理系及CNR-SPIN）；Lyman Laboratory, Department of Physics, Harvard University（哈佛大学物理系莱曼实验室）；Institute of Magnetism, National Academy of Sciences of Ukraine（乌克兰国家科学院磁学研究所）；Department of Quantum Matter Physics, University of Geneva（日内瓦大学量子物质物理系）
Ultrafast optical excitation of magnons in 2D antiferromagnetic semiconductors via spin torque mediated by unbound electron-hole pairs and excitons: Signatures in magnonic charge pumping
Department of Physics and Astronomy, University of Delaware（特拉华大学物理与天文学系）
