Journal
SCIENCE ADVANCES
Volume 6, Issue 43, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abc7628
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Funding
- National Science Foundation of China [51602040, 51872039, 51972046]
- Science and Technology Program of Sichuan [M112018JY0025]
- A*STAR Pharos Program [15270 00014, R-263-000-B91-305]
- National Research Foundation, Prime Minister's Office, Singapore under Competitive Research Program Award [NRF-CRP22-2019-0006]
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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 magnetophonon Raman scattering effect in ferromagnetic few-layer CrI3. We observed a rotation of the polarization plane of inelastically scattered light between -20 degrees and +60 degrees 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 two-dimensional ferromagnetic materials in Raman lasing, topological photonics, and magneto-optical modulator for information transport and storage.
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