Author(s): Liu, Z (Liu, Zhen); Guo, K (Guo, Kai); Hu, GW (Hu, Guangwei); Shi, ZT (Shi, Zhongtai); Li, Y (Li, Yue); Zhang, LB (Zhang, Linbo); Chen, HY (Chen, Haiyan); Zhang, L (Zhang, Li); Zhou, PH (Zhou, Peiheng); Lu, HP (Lu, Haipeng); Lin, ML (Lin, Miao-Ling); Liu, SZ (Liu, Sizhao); Cheng, YC (Cheng, Yingchun); Liu, XL (Liu, Xue Lu); Xie, JL (Xie, Jianliang); Bi, L (Bi, Lei); Tan, PH (Tan, Ping-Heng); Deng, LJ (Deng, Longjiang); Qiu, CW (Qiu, Cheng-Wei); Peng, B (Peng, Bo)

Source: SCIENCE ADVANCES Volume: 6 Issue: 43 Article Number: eabc7628 DOI: 10.1126/sciadv.abc7628 Published: OCT 2020

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 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.

Accession Number: WOS:000582114600034

PubMed ID: 33097544

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Hu, Guangwei         O-5997-2016         0000-0002-3023-9632

Tan, Ping-Heng         D-1137-2009         0000-0001-6575-1516

ISSN: 2375-2548

Full Text: https://advances.sciencemag.org/content/6/43/eabc7628