We report microwave power driven strong magnon-magnon coupling in Ni${}_{80}$Fe${}_{20}$ nano-cross array with large anticrossing gaps up to 1.03 GHz. We also observe microwave driven large nonlinear shift in ferromagnetic resonance frequency (FMR) with its sign dependent on the strength of bias magnetic field. A drastic enhancement of inter nano-cross dynamic dipolar interaction results in the anticrossing, while variation in internal spin texture leads to the nonlinear FMR shift. The tunable coupling strength and nonlinearity by microwave power ushers externally controlled nonlinear magnonic devices.

中文翻译：

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Ni80Fe20纳米交叉阵列中的大非线性铁磁共振谐振位移和强磁振子-磁振子耦合

我们报告了镍中微波功率驱动的强磁振子-磁振子耦合${}_{80}$铁${}_{20}$具有高达1.03 GHz的较大的反交叉间隙的纳米交叉阵列。我们还观察到微波驱动的铁磁谐振频率（FMR）中的大非线性位移，其符号取决于偏置磁场的强度。纳米交叉动态偶极相互作用的急剧增强导致了反交叉，而内部自旋结构的变化导致了非线性FMR移位。微波功率的可调节耦合强度和非线性度带来了外部控制的非线性大电子设备。