MoS2/WSe2 heterobilayers with controlled twist exhibit SHG circular dichroism up to 1.96, governed by structural handedness and explained by helicity-dependent interference via nonlinear Pancharatnam-Berry phase.
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Giant nonlinear optical chirality in twisted heterobilayers
MoS2/WSe2 heterobilayers with controlled twist exhibit SHG circular dichroism up to 1.96, governed by structural handedness and explained by helicity-dependent interference via nonlinear Pancharatnam-Berry phase.