论文标题
与Dzyaloshinskii-Moriya相互作用的CO/GD异质结构中磁域的全光切换
All-optical switching of magnetic domains in Co/Gd heterostructures with Dzyaloshinskii-Moriya Interaction
论文作者
论文摘要
鉴于混合旋转光谱设备和手性磁性结构的发展，在合成铁磁性结构中，磁化磁化强度和电流诱导的结构域壁运动的综合兴趣具有强大的Dzyaloshinskii-Moriya相互作用（DMI）。在这项研究中，我们报告了一项关于特殊工程CO/GD的多层结构中单脉冲全光型开关和不对称气泡扩展的研究。在没有任何外部磁场的情况下，我们研究了AOS性质以及DMI在AOS过程中的潜在作用以及光学书面微磁性域的稳定性。特别是，在两个连续的激光脉冲编写的月球结构中观察到有趣的动态。将偶极相互作用和域壁能量相互作用引起的域的稳定性与简单的分析模型和微磁模拟进行了比较。
Given the development of hybrid spintronic-photonic devices and chiral magnetic structures, a combined interest in all-optical switching (AOS) of magnetization and current-induced domain wall motion in synthetic ferrimagnetic structures with strong Dzyaloshinskii-Moriya Interaction (DMI) is emerging. In this study, we report a study on single-pulse all-optical toggle switching and asymmetric bubble expansion in specially engineered Co/Gd-based multilayer structures. In the absence of any external magnetic fields, we look into the AOS properties and the potential role of the DMI on the AOS process as well as the stability of optically written micro-magnetic domains. Particularly, interesting dynamics are observed in moon-shaped structures written by two successive laser pulses. The stability of domains resulting from an interplay of the dipolar interaction and domain-wall energy are compared to simple analytical models and micromagnetic simulations.
