Precessional magnetization switching by a surface acoustic wave
Precessional magnetization switching by a surface acoustic wave
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DOI：
10.1103/physrevb.93.134430
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发表时间：
2016-04-29
影响因子：
3.7
通讯作者：
Duquesne, J. -Y.
中科院分区：
文献类型：
--
作者：
Thevenard, L.;Camara, I. S.;Duquesne, J. -Y.
岁差切换允许磁性数据位的亚纳秒和确定性反转。它依赖于触发偏置场周围磁矩的大角度、高度非线性进动。在这里，我们证明了表面声波（SAW）的磁致伸缩半导体材料上传播产生一个有效的扭矩，诱导旋进开关。这是证明了克尔显微镜和声学行为分析（Ga，Mn）（As，P）薄膜。因此，使用SAW应该允许在潜在的GHz频率下对单个磁性位进行远程和波控制。
Precessional switching allows subnanosecond and deterministic reversal of magnetic data bits. It relies on triggering a large-angle, highly nonlinear precession of magnetic moments around a bias field. Here we demonstrate that a surface acoustic wave (SAW) propagating on a magnetostrictive semiconducting material produces an efficient torque that induces precessional switching. This is evidenced by Kerr microscopy and acoustic behavior analysis in a (Ga, Mn)(As, P) thin film. Using SAWs should therefore allow remote and wave control of individual magnetic bits at potentially GHz frequencies.