A sound idea: Manipulating domain walls in magnetic nanowires using surface acoustic waves
A sound idea: Manipulating domain walls in magnetic nanowires using surface acoustic waves
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DOI：
10.1063/1.4932057
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发表时间：
2015-10-05
影响因子：
4
通讯作者：
Hayward, T. J.
中科院分区：
文献类型：
--
作者：
Dean, J.;Bryan, M. T.;Hayward, T. J.
提出了一种利用电致声表面波在人工多铁性纳米线中钉扎和传播畴壁的方法。使用有限元微磁学模拟和一维半解析建模，我们演示了如何一对叉指声换能器可以远程诱导一个有吸引力的畴壁钉扎网站的阵列，通过形成一个驻波应力/应变波沿着纳米线的长度。表面声波频率的偏移允许多个畴壁以高达50 ms（-1）的速度同步传输。我们的研究为高效节能的畴壁器件奠定了基础，该器件利用表面声波的低传播损耗来精确地操纵大量的数据位。(C)2015 AIP Publishing LLC.
We propose a method of pinning and propagating domain walls in artificial multiferroic nanowires using electrically induced surface acoustic waves. Using finite-element micromagnetic simulations and 1D semi-analytical modelling, we demonstrate how a pair of interdigitated acoustic transducers can remotely induce an array of attractive domain wall pinning sites by forming a standing stress/strain wave along a nanowire's length. Shifts in the frequencies of the surface acoustic waves allow multiple domain walls to be synchronously transported at speeds up to 50 ms(-1). Our study lays the foundation for energy-efficient domain wall devices that exploit the low propagation losses of surface acoustic waves to precisely manipulate large numbers of data bits. (C) 2015 AIP Publishing LLC.