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Giant nonreciprocal second-harmonic generation from antiferromagnetic bilayer CrI3
Nature, Published online: 31 July 2019; doi:10.1038/s41586-019-1445-3
Large second-harmonic generation is observed in antiferromagnetic bilayers of CrI3, providing information about the microscopic origin of layered antiferromagnetism and motivating the use of two-dimensional magnets in nonlinear optical devices.