论文标题
谐振声子 - 马格农耦合的直接成像
Direct Imaging of Resonant Phonon-Magnon Coupling
论文作者
论文摘要
声子的直接检测对于研究共耦合元音和声子之间的信息互连很重要。在这里，我们报告了磁子和声子的谐振耦合，可以通过在Ni/Linbo3混合异质结构中使用微聚焦的Brillouin光散射直接可视化。表面声波声子的模式源自原始波浪ψ0（A_0，K）和反射波ψ1（A_1，-K）之间的干扰，这是由于磁通量耦合而被磁场调节的。通过分析从Brillouin光谱获得的声子的信息，磁通系统的性能（Ni膜），例如，可以确定铁电磁共振场和共振线。该结果提供了有关耦合磁通系统中有关声子操纵和检测的空间解决信息。
Direct detection of phonons is important for the investigation of information interconversion between the resonantly coupled magnons and phonons. Here we report resonant coupling of magnons and phonons, which can be directly visualized by using micro focused Brillouin light scattering in Ni/LiNbO3 hybrid heterostructures. The patterns of surface acoustic wave phonons, originating from the interference between the original wave ψ0(A_0,k) and reflected wave ψ1(A_1,-k), can be modulated by magnetic field due to the magnon-phonon coupling. By analyzing the information of phonons obtained from Brillouin spectroscopy, the properties of the magnon system (Ni film), e.g., ferromagnetic resonance field and resonance linewidth can be determined. The results provide spatially resolved information about phonon manipulation and detection in a coupled magnon-phonon system.
