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Related Articles from SNS
Layer-Resolved Nonlinear Optics in Finite-Thickness Two-Dimensional Systems
arXiv:2606.02354v1 Announce Type: cross Abstract: Nonlinear optical (NLO) responses in two-dimensional quantum-confined systems are typically described within bulk-based frameworks as macroscopic spatial averages. In finite-thickness van der Waals multilayers directly relevant to nanoscale devices, this picture substantially breaks down. Here, we establish a general symmetry-based framework for classifying second-order NLO responses in multilayers.