Ultrafast single-pulse switching of Tb-dominant CoTb alloy
Yongshan Liu, Houyi Cheng, Pierre Vallobra, Huiwen Wang, Sylvain Eimer, Xiaoqiang Zhang, G. Malinowski, M. Hehn, Yong Xu, S. Mangin, Weisheng Zhao
Abstract
Single-pulse magnetization switching by femtosecond laser pulses is the fastest way to manipulate magnetization. To date, among rare-earth transition metal alloys, single-pulse switching is limited to Gd-based structures. Here, we demonstrate ultrafast single-pulse switching of Tb-dominant CoTb alloys within several tens of picoseconds. Our further analysis shows that the ultrafast magnetization reversal is linked to ultrafast heating of laser pulses and an external field.
Topics & Concepts
Ultrashort pulseMagnetizationFemtosecondMaterials sciencePicosecondPulse (music)LaserAlloyOpticsOptoelectronicsMagnetic fieldPhysicsMetallurgyDetectorQuantum mechanicsMagnetic properties of thin filmsMagneto-Optical Properties and ApplicationsMagnetic Properties and Applications