Ultrafast Helicity-Dependent Magnetic Switching by Optical Phonons Driven at Resonance

被引：0
|
作者：
Davies, C. S. [1 ]
Fennema, N. [1 ]
Tsukamoto, A. [2 ]
Kirilyuk, A. [1 ]
机构：
[1] Radboud Univ Nijmegen, FELIX Lab, Nijmegen, Netherlands
[2] Nihon Univ, Coll Sci & Technol, Chiba, Japan
来源：
2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022) | 2022年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Using narrow-band mid- to- far-infrared circularly-polarized optical pulses, we demonstrate that magnetization can be switched all-optically in magnetic nanostructures mounted on fused-silica and sapphire substrates. The helicity-dependent magnetic switching scales in efficiency with optical phonons characteristic of the substrate. We explain the switching in terms of a transient magnetic field originating from resonantly-driven circularly-polarized lattice vibrations in the substrate.
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