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Giant and controllable nonlinear magneto-optical effects in two-dimensional magnets

Physics

Giant and controllable nonlinear magneto-optical effects in two-dimensional magnets

D. Wu, M. Ye, et al.

This groundbreaking research by Dezhao Wu, Meng Ye, Haowei Chen, Yong Xu, and Wenhui Duan explores giant nonlinear magneto-optical effects in 2D magnets, revealing astonishing changes in second-harmonics generation under magnetization reversal. With potential applications in multifunctional optical devices, their work lays the foundation for innovative magnetic ordering detection techniques.

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Playback language: English
Abstract
This paper investigates giant nonlinear magneto-optical (NLMO) effects in CrI₃-based 2D magnets using first-principles calculations. The study reveals a dramatic change in second-harmonics generation (SHG) polarization direction and intensity under magnetization reversal, along with a 100% SHG circular dichroism effect. These findings suggest potential applications in ultra-thin multifunctional optical devices and subtle magnetic ordering detection. The authors analytically derive conditions for giant NLMO effects and propose general strategies for realizing them in 2D magnets.
Publisher
npj Computational Materials
Published On
Apr 22, 2024
Authors
Dezhao Wu, Meng Ye, Haowei Chen, Yong Xu, Wenhui Duan
DOI
https://doi.org/10.1038/s41524-024-01266-x
Tags
nonlinear magneto-optical effects
second-harmonics generation
magnetization reversal
circular dichroism
2D magnets
optical devices

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