Asymmetric scattering behaviors of spin wave dependent on magnetic vortex chirality  

作　　者：张雪枫 沈帝虎 马晓萍 宋成 于海明 朴红光 Xue-Feng Zhang;Je-Ho Shim;Xiao-Ping Ma;Cheng Song;Haiming Yu;Hong-Guang Piao(Hubei Engineering Research Center of Weak Magnetic-Field Detection,China Three Gorges University,Yichang 443002,China;Department of Physics,College of Science,Yanbian University,Yanji 133002,China;Key Laboratory of Advanced Materials,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China;Fert Beijing Institute,School of Integrated Circuit Science and Engineering,Beijing Advanced Innovation Center for Big Data and Brain Computing,Beihang University,Beijing 100191,China)

机构地区：[1]Hubei Engineering Research Center of Weak Magnetic-Field Detection,China Three Gorges University,Yichang 443002,China [2]Department of Physics,College of Science,Yanbian University,Yanji 133002,China [3]Key Laboratory of Advanced Materials(MOE),School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China [4]Fert Beijing Institute,School of Integrated Circuit Science and Engineering,Beijing Advanced Innovation Center for Big Data and Brain Computing,Beihang University,Beijing 100191,China

出　　处：《Chinese Physics B》2023年第10期635-640,共6页中国物理B（英文版）

基　　金：Project supported by the Basic Science Research Program of the National Research Foundation of Korea(Grant No.2021R1F1A1050539);the Yanbian University Research Project(Grant No.482022104);the Yichang Natural Science Research Project(Grant No.A22-3-010)。

摘　　要：We investigate asymmetric spin wave scattering behaviors caused by vortex chirality in a cross-shaped ferromagnetic system by using the micromagnetic simulations.In the system,four scattering behaviors are found:(i)asymmetric skew scattering,depending on the polarity of vortex core,(ii)back scattering(reflection),depending on the vortex core stiffness,(iii)side deflection scattering,depending on structural symmetry of the vortex circulation,and(iv)geometrical scattering,depending on waveguide structure.The first and second scattering behaviors are attributed to nonlinear topological magnon spin Hall effect related to magnon spin-transfer torque effect,which has value for magnonic exploration and application.

关 键 词：magnonics magnetic vortex spin wave magnetic chirality 

分 类 号：O469[理学—凝聚态物理]