In a ferroelectric SnTe monolayer, the in-plane electric polarization induces a Berry curvature dipole and enables charge and spin photocurrents whose directions can be switched by reversing the polarization or the light helicity.
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Prediction of ferroelectricity-driven Berry curvature enabling charge- and spin-controllable photocurrent in tin telluride monolayers
In a ferroelectric SnTe monolayer, the in-plane electric polarization induces a Berry curvature dipole and enables charge and spin photocurrents whose directions can be switched by reversing the polarization or the light helicity.