Spin pumping by higher-order dipole-exchange spin-wave modes

作     者：王鹏 Peng Wang

作者机构：College of Mathematics and PhysicsQingdao University of Science and TechnologyQingdao 266061China Advanced Optoelectronic Materials and Technologies Engineering Laboratory of Shandong ProvinceQingdao 266061China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2023年第32卷第3期

页      面：531-536页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0703[理学-化学] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(Grant No.11904194) 

主　　题：spin pumping parametric excitation spin-wave spectrum fine structures 

摘      要：Spin pumping(SP)and inverse spin Hall effect(ISHE)driven by parametrically-excited dipole-exchange spin waves in a yttrium iron garnet film have been systematically *** measured voltage spectrum exhibits a feature of the field-induced transition from parallel pumping to perpendicular pumping because of the inhomogeneous excitation *** to the high precision of the SP-ISHE detection,two sets of fine structures in the voltage spectrum are observed,which can correspond well to two kinds of critical points in the multimode spin-wave spectrum for magnetic *** is the q=0 point of each higher-order dispersion branch,and the other is the local minimum due to the interplay between the dipolar and exchange *** fine structures on the voltage spectrum confirm the spin pumping by higher-order dipole-exchange spin-wave modes,and are helpful for probing the multimode spin-wave spectrum.