共振磁声开关：瑞利波频率和波矢的影响
Resonant magneto-acoustic switching: influence of Rayleigh wave frequency and wavevector
摘要：
我们表明，在平面内磁化的薄膜，磁化可以有效地切换180度使用大振幅瑞利波沿硬或易磁化轴。在后一种情况下，形成大的特征性的类磁共振域。微磁模拟清楚地证实，这种多域配置是兼容的共振旋进机制。在两种几何结构中，反转的畴都有几百μm^2，比使用自旋转移矩或场驱动的旋进开关所显示的要大得多。我们表明，表面声波在寻址给定区域之前可以传播至少1mm，并且可以干涉以创建可以以亚微米精度定位的磁条。
英文摘要：
We show on in-plane magnetized thin films that magnetization can be switched efficiently by 180 degrees using large amplitude Rayleigh waves travelling along the hard or easy magnetic axis. Large characteristic filament-like domains are formed in the latter case. Micromagnetic simulations clearly confirm that this multi-domain configuration is compatible with a resonant precessional mechanism. The reversed domains are in both geometries several hundreds of μm^2, much larger than has been shown using spin transfer torque- or field-driven precessional switching. We show that surface acoustic waves can travel at least 1mm before addressing a given area, and can interfere to create magnetic stripes that can be positionned with a sub-micronic precision.
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