We explore the magnetoelastic dynamics in magnetic insulators exposed to a focused twisted laser beam, revealing the generation of twisted magnons and phonons through magnetoelastic coupling driven by orbital angular momentum transfer. The excited modes exhibit unique orbital quantum numbers, with coherently induced twisted dynamics mirroring the handedness of excitation pulse, i.e., the sign of orbital quantum number, while heating-induced dynamics remain unaffected by the pulse's orbital angular momentum. This approach provides precise spatial control of coherent spin dynamics in magnetic materials.

中文翻译：

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结构光磁绝缘体的扭曲动力学


我们探索了暴露在聚焦扭曲激光束下的磁绝缘体的磁弹性动力学，揭示了通过轨道角动量转移驱动的磁弹性耦合产生扭曲磁振子和声子。激发模式表现出独特的轨道量子数，相干诱导的扭曲动力学反映了激发脉冲的旋向性，即轨道量子数的符号，而加热诱导的动力学仍然不受脉冲轨道角动量的影响。这种方法提供了磁性材料中相干自旋动力学的精确空间控制。