We propose a method to induce deterministic motion of a magnetic domain wall in a nanowire by inducing short strain pulses uniformly along the nanowire. Via inverse magnetostriction, a strain pulse causes the magnetic anisotropy to vary uniformly on a timescale comparable to the magnetisation dynamics. The resultant torque on the magnetic moments within the domain wall cause it to move along the nanowire. Using numerical calculations we analyse in detail the dependence of the domain wall’s motion on the material’s parameters and on the anisotropy pulse profile, and we consider the specific case of the anisotropy induced by voltage pulses applied to a hybrid piezoelectric/ferromagnet device. The method will be applicable to a range of magnetic textures including skyrmions, solitons, and domain walls in antiferromagnets, and is prospective for applications in a range of areas including ultra-energy efficient information storage and processing, communications technologies, position...

中文翻译：

---

脉冲各向异性能量引起的确定性磁畴壁运动

我们提出了一种方法，该方法通过沿纳米线均匀地产生短应变脉冲来诱导纳米线中磁畴壁的确定性运动。通过逆磁致伸缩，应变脉冲使磁各向异性在与磁化动力学相当的时间尺度上均匀变化。畴壁内的磁矩上的合成转矩使它沿着纳米线移动。使用数值计算，我们详细分析了畴壁运动对材料参数和各向异性脉冲轮廓的依赖性，并考虑了由施加到混合压电/铁磁体设备的电压脉冲引起的各向异性的特殊情况。该方法将适用于各种磁性结构，包括天铁离子，孤子和反铁磁体中的畴壁，