Fig. 4: SHG susceptibility, CPL SHG intensity and polarization-resolved SHG for ABA-MIX CrI3.
From: Giant and controllable nonlinear magneto-optical effects in two-dimensional magnets
a Real parts of SHG susceptibility tensor components of ABA-MIX CrI3. Red and blue lines represent results for MIX(↑↑↓) and tMIX(↓↓↑) magnetic orders, respectively. b SHG intensity of MIX and tMIX magnetic orders of ABA-MIX CrI3 under CPL illumination. The upper and lower panels are for incident helicity σ+ and σ−. The difference between the red and blue curves in each panel reflects the \({\eta }_{{{{\mathcal{T}}}}}\). For a particular magnetic order, the difference between the upper and lower panels reflects the magnitude of SHG-CD. c Polarization-resolved SHG of AFM, tAFM, MIX, and tMIX magnetic orders at one of the LPL frequency \({\omega }_{{{{\rm{LPL}}}}}^{{\prime} }\)= 1.22 eV of ABA-AFM CrI3. The red/blue arrow represents the magnetic moment in each CrI3 layer.
