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2d materials 1ferrotoroid 1magnetochirality 1nonlinear optics 1second-harmonic generation 1spin canting 1

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physics.optics2026

Spin-canting-induced Giant Nonlinear Optical Magnetochirality in a 2D Ferrotoroid

Shian Xia, Sheng Liu, Wenhe Jia +9

The paper demonstrates giant nonlinear optical magnetochirality in bilayer CrSBr, where a field‑induced spin‑canting breaks PT symmetry and enables magnetically switchable circular…