Parametric Resonance of Magnetization Excited by Electric Field
Parametric Resonance of Magnetization Excited by Electric Field
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DOI：
10.1021/acs.nanolett.6b04725
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发表时间：
2017-01-01
期刊：
影响因子：
10.8
通讯作者：
Krivorotov, Ilya N.
中科院分区：
文献类型：
--
作者：
Chen, Yu-Jin;Lee, Han Kyu;Krivorotov, Ilya N.
通过电场操纵磁化是自旋电子学的核心目标，因为它可以实现基于自旋的器件的节能运行。自旋波器件是低功耗信息处理的有希望的候选者，但一直缺乏短波长自旋波的高能效激发方法。在这里，我们证明纳米级磁隧道结中的自旋波可以通过电场引起的参量共振产生。磁化参数激发是一种产生短波长自旋波的通用方法，因此，我们的结果为节能纳米磁器件铺平了道路。
Manipulation of magnetization by electric field is a central goal of spintronics because it enables energy-efficient operation of spin-based devices. Spin wave devices are promising candidates for low-power information processing, but a method for energy-efficient excitation of short-wavelength spin waves has been lacking. Here we show that spin waves in nanoscale magnetic tunnel junctions can be generated via parametric resonance induced by electric field. Parametric excitation of magnetization is a versatile method of short-wavelength spin wave generation, and thus, our results pave the way toward energy efficient nanomagnonic devices.