论文标题
自旋扭动纳米振荡器中层间交换耦合的影响
Effect of interlayer exchange coupling in spin-torque nano oscillator
论文作者
论文摘要
由于理论上研究了自旋扭动纳米振荡器（STNO）中自旋扭转纳米振荡器（STNO）的动力学，由于理论上已经研究了由于间层交换偶联而引起的自由和固定层之间的非共线比对。通过Macrospin模型计算了自由层与固定层的磁化层的取向，发现它们与实验结果非常匹配。双线性和生物偶联的耦合强度使电流稳定地在两个状态或振荡之间切换磁化。振荡之间的临界电流的表达式和临界双线性耦合强度，而临界双线性耦合强度则是振荡的。振荡的频率被证明是调谐的，并通过电流增加或以上是300 GHz，这是迄今为止纳米乳形STNOS中最大的。
The dynamics of the magnetization of the free layer in a spin-torque nano oscillator (STNO) influenced by a noncollinear alignment between the magnetizations of the free and pinned layers due to an interlayer exchange coupling has been investigated theoretically. The orientations of the magnetization of the free layer with that of the pinned layer have been computed through the macrospin model and they are found to match well with experimental results. The bilinear and biquadratic coupling strengths make the current to switch the magnetization between two states or oscillate steadily. The expressions for the critical currents between which oscillations are possible and the critical bilinear coupling strength below which oscillations are not possible are derived. The frequency of the oscillations is shown to be tuned and increased to or above 300 GHz by the current which is the largest to date among nanopillar-shaped STNOs.
