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arXiv · 2008.12896

Observation of nonreciprocal magneto-optical scattering in nonencapsulated few-layered CrI3

Zhen Liu·Kai Guo·Guangwei Hu·Zhongtai Shi·Yue Li·Linbo Zhang·Haiyan Chen·Li Zhang·Peiheng Zhou·Haipeng Lu·Miao-Ling Lin·Sizhao Liu·Yingchun Cheng·Xue Lu Liu·Jianliang Xie·Lei Bi·Ping-Heng Tan·Longjiang Deng·Cheng-Wei Qiu·Bo Peng
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Abstract

Magneto-optical effect refers to a rotation of polarization plane, which has been widely studied in traditional ferromagnetic metal and insulator films and scarcely in two-dimensional layered materials. Here we uncover a new nonreciprocal magneto-inelastic light scattering effect in ferromagnetic few-layer CrI3. We observed a rotation of the polarization plane of inelastic light scattering between -20o and +60o that are tunable by an out-of-plane magnetic field from -2.5 to 2.5 T. It is experimentally observed that the degree of polarization can be magnetically manipulated between -20% and 85%. This work raises a new magneto-optical phenomenon and could create opportunities of applying 2D ferromagnetic materials in Raman lasing, topological photonics, and magneto-optical modulator for information transport and storage.

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Zhen Liu, Kai Guo, Guangwei Hu, Zhongtai Shi, Yue Li, Linbo Zhang, Haiyan Chen, Li Zhang, Peiheng Zhou, Haipeng Lu, Miao-Ling Lin, Sizhao Liu, Yingchun Cheng, Xue Lu Liu, Jianliang Xie, Lei Bi, Ping-Heng Tan, Longjiang Deng, Cheng-Wei Qiu, Bo Peng. 2020-10-10. Observation of nonreciprocal magneto-optical scattering in nonencapsulated few-layered CrI3. https://doi.org/10.1126/sciadv.abc7628

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