标题： YIG 纳米波导中通过反向自旋波的共振模式间二次谐波产生 显示英文标题

标题： Resonant inter-mode second harmonic generation by backward spin waves in YIG nano-waveguides

摘要： 我们实验研究了在由厚度为几十纳米的低损耗磁性绝缘体制成的微观磁振子波导中，向后体积自旋波产生的二次谐波的非线性生成。 我们表明，在模式间区域，可在微波功率约为10^-4 W的情况下实现高效共振二次谐波生成。与之前观察到的二次谐波生成过程不同，由向后波产生的谐波具有与初始波相反传播的非线性生成波，并且可以在零偏置磁场下实现。 显示英文摘要

摘要： We experimentally study nonlinear generation of the second harmonic by backward volume spin waves propagating in microscopic magnonic waveguides fabricated from a low-loss magnetic insulator with a thickness of several tens of nanometers. We show that highly efficient resonant second harmonic generation is possible in the inter-mode regime at microwave powers of the order of 10^-4 W. In contrast to previously observed second harmonic generation processes, the generation by backward waves is characterized by the nonlinearly generated waves propagating opposite to the initial waves, and can be realized at zero bias magnetic field.