飞秒尺度下的惯性磁化强度动力学  

Inertial magnetization dynamics on femtosecond scale

作　　者：李再东 南雪萌 屈川 刘伍明[3] Li Zai-Dong;Nan Xue-Meng;Qu Chuan;Liu Wu-Ming(Tianjin Key Laboratory of Quantum Optics and Intelligent Photonics,School of Science,Tianjin University of Technology,Tianjin 300384,China;State Key Laboratory of Quantum Optics and Quantum Optics Devices,Shanxi University,Taiyuan 030006,China;Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]天津理工大学理学院,天津市量子光学与智能光子学重点实验室,天津300384 [2]山西大学,量子光学与光量子器件国家重点实验室,太原030006 [3]中国科学院物理研究所,北京100190

出　　处：《物理学报》2023年第10期302-316,共15页Acta Physica Sinica

基　　金：量子光学与光量子器件国家重点实验室(山西大学)开放课题资助项目(批准号:KF202203);国家重点研发计划(批准号:2021YFA1400900,2021YFA0718300,2021YFA1402100);国家自然科学基金(批准号:61835013,12174461,12234012);中国载人航天工程空间应用系统资助的课题。

摘　　要：在亚皮秒到飞秒时间尺度下,铁磁体中磁化强度的动力学中要考虑惯性效应,它可以用惯性朗道-利夫希茨-吉尔伯特(inertial Landau-Lifshitz-Gilbert)方程来描述.本文主要介绍了超快铁磁共振、磁矩翻转和惯性自旋动力学在理论和实验上的一些发展,这些研究结果将有助于更好地理解超快退磁和翻转的基本机制,加深对磁惯性微观机制的理解,揭示未来的实验和理论研究的发展趋势.Inertia effect should be considered in ferromagnet magnetization dynamics on a sub picosecond-to-femtosecond-time scale.The inertia effect can be described by the inertial Landau-Lifshitz-Gilbert equation.This paper mainly introduces some theoretical and experimental developments of ultrafast ferromagnetic resonance,magnetization reversal and inertial spin dynamics.These results will be helpful in better understanding the basic mechanism of ultrafast demagnetization and magnetization reversal,and deepen the understanding of the microscopic mechanism of magnetic inertia.In the end,the development trend of future experimental and theoretical research are also presented.

关 键 词：惯性效应 铁磁共振 磁矩翻转 

分 类 号：O482.534[理学—固体物理]