Materials Engineering Enabled by Time-Resolved Magneto-Optical Kerr Effect for Spintronic Applications
Materials Engineering Enabled by Time-Resolved Magneto-Optical Kerr Effect for Spintronic Applications
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DOI：
10.1021/acsaelm.0c00961
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发表时间：
2021-01-26
影响因子：
4.7
通讯作者：
Wang, Xiaojia
中科院分区：
文献类型：
--
作者：
Huang, Dingbin;Lattery, Dustin;Wang, Xiaojia
作为超快泵浦-探测激光技术的更新版本，时间分辨磁光克尔效应（TR-MOKE）方法能够以极好的时间（亚皮秒）和空间（衍射限制束斑）分辨率检测磁化动态。它是表征材料性质和揭示磁性薄膜中磁化动力学的丰富物理过程的有力工具，磁性薄膜是自旋电子学和磁记录器件的基本组成部分。在这篇聚焦文章中，我们将重点介绍TR-MOKE计量学发展的最新进展及其在捕获技术重要的自旋电子材料中的磁化动力学方面的应用。我们涵盖了几个有代表性的例子的基础上进行的研究活动在明尼苏达大学（UMN），包括吉尔伯特阻尼，自旋应变耦合，层间交换耦合的垂直磁性材料的研究。还将进行简短的讨论，其中突出了其他几个新兴的研究课题，这些课题可能通过这种计量学来形成其在新兴材料和技术中的应用的更全面的图景。
As an updated version of the ultrafast pump-probe laser technique, the time-resolved magneto-optical Kerr effect (TR-MOKE) methodology enables the detection of magnetization dynamics with superb temporal (sub-picosecond) and spatial (diffraction-limited beam spot) resolutions. It is a powerful tool to characterize material properties and to reveal the rich physics of magnetization dynamics in magnetic thin films, which serve as the essential building blocks for spintronic and magnetic recording devices. In this spotlight article, we will highlight the recent advances in the development of TR-MOKE metrology and its applications for capturing the magnetization dynamics in technologically important spintronic materials. We cover several representative examples based on research activities carried out at the University of Minnesota (UMN), including studies of Gilbert damping, spin-strain coupling, and interlayer exchange coupling of perpendicular magnetic materials. A brief discussion will be also presented, which highlights several other emerging research topics that are potentially enabled by this metrology to form a more comprehensive picture of its applications for emerging materials and technologies.