AI 中文总结
研究观察到泵浦诱导的双反交叉，其特性依赖泵浦功率，归因于非简并三磁振子分裂。高磁场中反交叉消失，确定为三磁振子散射。该分裂产生两个磁振子群体形成驻波模式，独立耦合到基特尔模式，表明非线性磁振子相互作用可动态生成多耦合通道。
AI 中文摘要
我们观察到泵浦诱导的双反交叉，其能隙大小和中心频率偏移强烈依赖于泵浦功率，表明存在非线性机制。在高磁场中反交叉消失，此时能量守恒抑制了三磁振子分裂，确定其潜在过程为三磁振子散射。我们将双反交叉归因于非简并三磁振子分裂，它产生了两个不同频率的磁振子群体。每个群体形成驻波模式并独立耦合到基特尔模式，产生两个有效耦合通道。这些结果表明非线性磁振子相互作用可在单个系统中动态生成多个耦合通道。
英文摘要
We observe pump-induced double anticrossings whose gap sizes and center-frequency shifts depend strongly on pump power, indicating a nonlinear mechanism. The anticrossings vanish at high magnetic fields, where energy conservation suppresses three-magnon splitting, thereby identifying the underlying process as three-magnon scattering. We attribute the double anticrossings to nondegenerate three-magnon splitting, which generates two magnon populations at distinct frequencies. Each population forms a standing-wave mode and couples independently to the Kittel mode, giving rise to two effective coupling channels. These results demonstrate that nonlinear magnon interactions can dynamically generate multiple coupling channels within a single system.
Comments6 pages, 3 figures
