Two-dimensional (2D) magnetic systems possess versatile magnetic order and can host tunable magnons carrying spin angular momenta. Recent advances show angular momentum can also be carried by lattice vibrations in the form of chiral phonons. However, the interplay between magnons and chiral phonons as well as the details of chiral phonon formation in a magnetic system are yet to be explored. Here, we report the observation of magnon-induced chiral phonons and chirality selective magnon-phonon hybridization in a layered zigzag antiferromagnet (AFM) FePSe$_3$. With a combination of magneto-infrared and magneto-Raman spectroscopy, we observe chiral magnon polarons (chiMP), the new hybridized quasiparticles, at zero magnetic field. The hybridization gap reaches 0.25~meV and survives down to the quadrilayer limit. Via first principle calculations, we uncover a coherent coupling between AFM magnons and chiral phonons with parallel angular momenta, which arises from the underlying phonon and space group symmetries. This coupling lifts the chiral phonon degeneracy and gives rise to an unusual Raman circular polarization of the chiMP branches. The observation of coherent chiral spin-lattice excitations at zero magnetic field paves the way for angular momentum-based hybrid phononic and magnonic devices.
Universally optimizable strategy for magnetic gaps towards high-temperature quantum anomalous Hall states via magnetic-insulator/topological-insulator building-blocks
Correlation between the Dzyaloshinskii-Moriya interaction and the orbital angular momentum at an oxide / ferromagnet interface
我们报告的Dzyaloshinskiii-Moriya（）相互作用在铁磁体和氧化物之间的界面。我们用实验证明氧化物能引起氧化物。通过比较由Pt/Co 90 Fe 10/氧化物和Cu/Co 90 Fe 10/氧化物组成的系统，我们还展示了一个界面的氧化如何增强和增加由Pt界面产生的总氧化。这是由于在两个界面上的手性促进左手手性的事实。最后，通过使用铁磁共振光谱，我们表明，的π和光谱分裂因子，这是一个衡量的轨道动量，相关。这表明了杂化和电荷转移在氧化物界面的重要性。
Empa, Swiss Federal Laboratories for Materials Science and Technology（瑞士联邦材料科学与技术研究所）；Nanosurf Lab, Institute of Physics of the Czech Academy of Sciences（捷克科学院物理研究所纳米镜实验室）；National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室分子发现中心电子显微镜国家中心）；Department of Chemistry, The Maharaja Sayajirao University of Baroda（瓦多达拉 Maharaja Sayajirao 大学化学系）
First-principles calculations of spin-split bands in chiral hybrid organic-inorganic perovskites ($R$/$S$-PEA)PbI$_3$ and ($R$/$S$-NEA)PbI$_3$
Institute for Materials Research, Tohoku University（东北大学物质材料研究所学）；Department of Applied Physics, Tokyo University of Science（东京科学大学应用物理系）；School of Advanced Science and Engineering, Waseda University（早稻田大学先进理工学研究院）
Chiral Spinterfaces as an Overlooked Component of the Chiral-Induced Spin Selectivity Effect
Chemnitz University of Technology（开姆尼茨工业大学）；Research Center for Materials, Architectures and Integration of Nanomembranes (MAIN)（纳米膜材料、架构与集成研究中心）；Eindhoven University of Technology（埃因霍温理工大学）
Revealing magnetism in the distorted kagome $R$Ti$_3$Bi$_4$ ($R$ = Nd, Sm, Gd) via ARPES and XMCD
Donostia International Physics Center (DIPC)（多诺斯蒂亚国际物理中心）；University of the Basque Country (UPV/EHU)（巴斯克大学）；Centro de Física de Materiales (CFM) CSIC-UPV/EHU（材料物理中心 (CFM) 西班牙国家研究委员会-巴斯克大学）；ALBA Synchrotron Light Source（阿尔巴同步辐射光源）；National Synchrotron Light Source II, Brookhaven National Laboratory（布鲁克海文国家实验室国家同步辐射光源二号设施）；Diamond Light Source Ltd（钻石光源有限公司）；Max Planck Institute for Chemical Physics of Solids（马克斯·普朗克固体化学物理研究所）
Chiral Phonons and Giant Anisotropic Photoresponse in Quasi-1D van der Waals Semiconductor ZrSnS3
National Key Laboratory of Spintronics, Hangzhou International Innovation Institute, Beihang University（北京航空航天大学杭州创新研究院）；Department of Physics, Binghamton University-SUNY（宾汉姆顿大学）；University of Warsaw, Faculty of Physics（华沙大学物理系）；School of Materials Science and Engineering, Institutes of Physical Science and Information Technology, Anhui University（安徽大学物质科学与信息技术研究院）；Nanoscale Synthesis & Research Laboratory, Department of Applied Physics, University of Karachi（卡拉奇大学应用物理系纳米合成与研究实验室）
Tunable Ultrastrong Magnon-Magnon Coupling and Squeezed States in a Triaxial Van der Waals Antiferromagnet
National Key Laboratory of Spintronics and School of Physics, Nanjing University（南京大学自旋电子学国家重点实验室和物理学院）；School of Science, Nanjing University of Posts and Telecommunications（南京邮电大学理学院）；Laboratory of Solid State Microstructures, Nanjing University（南京大学固体微结构实验室）；State Key Laboratory of Spintronics, Nanjing University（南京大学自旋电子学国家重点实验室）
