Study of the local structure of 2D chiral perovskites

Chiral metal halide perovskites are emerging as important materials for non-linear optical properties and spin-related phenomena due to their chiroptical and chiro-spintronic properties. To date several chiral perovskites have been prepared and characterized but the exact mechanism of chiral transfer is still elusive and on debate. It seems clear a key role of local octahedra distortion in promoting Rashba splitting of the conduction band giving origin to spin polarization. In this proposal we aim at investigating the local structure of archetypal 2D chiral perovskites where Rashba splitting has been determined and tentatively related to peculiar octahedra distortions by means of x-ray total scattering.