Domain wall dynamics driven by a circularly polarized magnetic field in ferrimagnet:effect of Dzyaloshinskii-Moriya interaction

作     者：Ting-Ting Liu Yi-Fei Hu Yang Liu Zhe-Jun-Yu Jin Zheng-Hua Tang Ming-Hui Qin Ting-Ting Liu;Yi-Fei Hu;Yang Liu;Zhe-Jun-Yu Jin;Zheng-Hua Tang;Ming-Hui Qin

作者机构：Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials and Institute for Advanced MaterialsSouth China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou510006China School of Physics and Electronic and Electrical EngineeringXiangnan UniversityChenzhou423000China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第11期

页      面：3815-3822页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51971096) the National Natural Science Foundation of Guangdong Province(No.2019A1515011028) Guangdong Basic and Applied Basic Research Foundation(No.2022A1515011727) the National College Students'Innovation and Entrepreneurship Training Program(No.202110574049)。 

主　　题：Domain wall dynamics Spintronics Circularly polarized magnetic field Ferrimagnets 

摘      要：In this work,we study the domain wall motion in ferrimagnet driven by a circularly polarized magnetic field using the collective coordinate theory and atomistic micromagnetic simulations,and we pay particular attention to the effect of Dzyaloshinskii-Moriya interaction(DMI).Similar to the case of antiferromagnetic domain wall,ferrimagnetic wall moves at a speed which is linearly dependent on the DMI magnitude.In addition,it is revealed that the DMI plays a role in modulating the domain wall dynamics similar to that of the net spin density,which suggests another internal parameter for controlling domain wall in ferrimagnets.Moreover,the results show that the domain wall dynamics in ferrimagnets is much faster than that in ferromagnets,which confirms again the great potential of ferrimagnets in future spintronic applications.