Author(s): Xiangzhou Zhu, Stefano Mocatti, and Matteo Calandra Light-induced sliding ferroelectricity in two-dimensional van der Waals materials enables polarization control via relative layer motion. However, polarization switching occurs on the timescale of shear modes (tens of picoseconds) and requires very large fluences, potentially damaging the samples. H… [Phys. Rev. Lett. 137, 106402] Published Wed Sep 02, 2026