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. 2020 Oct 23;6(43):eabc7628. doi: 10.1126/sciadv.abc7628

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — (A) 2D maps of magneto-optical Raman scattering spectra of 5L CrI₃ as a function of magnetic field. The polarization plane is rotating as the magnetic field increases. (B) Polarization angle of 3L, 5L, and bulk CrI₃ with an asymmetric variation as a function of magnetic field, indicating a nonreciprocal magnetic-biased control behavior. (C) Schematic picture of polarization configuration. β is the angle between laboratory coordinates (x_L, y_L, and z_L) and crystal coordinates (x_C, y_C, and z_C). θ is the scattering angle in the laboratory coordinates.