Gilbert damping in the layered antiferromagnet CrCl_(3)

作     者：Xinlin Mi Ledong Wang Qi Zhang Yitong Sun Yufeng Tian Shishen Yan Lihui Bai 米锌林;王乐栋;张琪;孙艺彤;田玉峰;颜世申;柏利慧

作者机构：School of PhysicsState Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100China 

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

年 卷 期：2022年第31卷第2期

页      面：581-586页

核心收录：

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

基　　金：supported by the National Natural Science Foundation of China(Grant No.11774200) the Shandong Provincial Natural Science Foundation,China(Grant No.ZR2019JQ02) the Youth Interdisciplinary Science and Innovative Research Groups of Shandong University 

主　　题：Gilbert damping antiferromagnetic resonance(AFMR) CrCl_(3) 

摘      要：We theoretically and experimentally studied the Gilbert damping evolution of both acoustic and optical magnetic resonance modes in the layered flake Cr Cl;with an external magnetic field H applied in *** on a Lagrangian equation and a Rayleigh dissipation function,we predicted that the resonance linewidth△H as a function of microwave frequencyωis nonlinear for both acoustic and optical modes in the Cr Cl;flake,which is significantly different from the linear relationship of△H-ωin *** the microwave transmission through the Cr Cl;flake,we obtained theω–H dispersion and damping evolution△H–ωfor both acoustic and optical *** both our theoretical prediction and experimental observations,we concluded that the nonlinear damping evolution△H–ωis a consequence of the interlayer interaction during the antiferromagnetic resonance,and the interlayer Gilbert dissipation plays an important role in the nonlinear damping evolution because of the asymmetry of the non-collinear magnetizaiton between layers.