Asymmetric scattering behaviors of spin wave dependent on magnetic vortex chirality

被引：0
|
作者：
Zhang, Xue-Feng [1 ]
Shim, Je-Ho [2 ]
Ma, Xiao-Ping [2 ]
Song, Cheng [3 ]
Yu, Haiming [4 ]
Piao, Hong-Guang [1 ,2 ]
机构：
[1] China Three Gorges Univ, Hubei Engn Res Ctr Weak Magnet Field Detect, Yichang 443002, Peoples R China
[2] Yanbian Univ, Coll Sci, Dept Phys, Yanji 133002, Peoples R China
[3] Tsinghua Univ, Sch Mat Sci & Engn, MOE, Key Lab Adv Mat, Beijing 100084, Peoples R China
[4] Beihang Univ, Sch Integrated Circuit Sci & Engn, Fert Beijing Inst, Beijing Adv Innovat Ctr Big Data & Brain Comp, Beijing 100191, Peoples R China
来源：
CHINESE PHYSICS B | 2023年 / 32卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
magnonics; magnetic vortex; spin wave; magnetic chirality; 75.30.Ds; 75.40.Gb; 75.78.Cd; 74.25.Ha; EMISSION; CORES;
D O I：
10.1088/1674-1056/acd36a
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
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页数：6
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