论文标题
超导体的非线性特征 - 弗洛特米特 - 苏格导体$φ_0$ josephson在铁磁共振区域
Nonlinear features of the superconductor--ferromagnet--superconductor $φ_0$ Josephson junction in ferromagnetic resonance region
论文作者
论文摘要
我们演示了铁磁共振区域的$φ_0$ JOSEPHSON交界处的磁化动力学和IV-特征的非线性特征的表现。我们表明，在系统参数的较小值下，即阻尼，旋转轨道相互作用和约瑟夫森与磁能比，磁化动力学被降低至由约瑟夫森振荡驱动的标量螺栓螺栓振荡器的动力学。阐明了增加共振区域中超导电流的作用。整个Landau-lifshitz-gilbert-Josephson方程系统及其不同的近似值，证明了铁磁共振频率的转移及其阻尼依赖性的逆转。最后，我们证明了静脉注射学中的负差分抗性及其与折叠效应的相关性。
We demonstrate the manifestations of the nonlinear features in magnetic dynamics and IV-characteristics of the $φ_0$ Josephson junction in the ferromagnetic resonance region. We show that at small values of system parameters, namely, damping, spin-orbit interaction, and Josephson to magnetic energy ratio, the magnetic dynamics is reduced to the dynamics of the scalar Duffing oscillator, driven by the Josephson oscillations. The role of increasing superconducting current in the resonance region is clarified. Shifting of the ferromagnetic resonant frequency and the reversal of its damping dependence due to nonlinearity are demonstrated by the full Landau-Lifshitz-Gilbert-Josephson system of equations, and in its different approximations. Finally, we demonstrate the negative differential resistance in the IV--characteristics, and its correlation with the foldover effect.
