Spin Polarized Charge Transport in 2D Chiral Perovskites

With outstanding optoelectrical performance and structural tunability, 2D organic-inorganic hybrid perovskites also manifest intriguing spintronic properties. As a proof of spin–orbital coupling, spin-dependent charge transport was reported in 2D chiral perovskites, where specific spin transport is impeded depending on the handedness of organic cations. Despite the observation, the structural origin of chirality as well as the spin polarization and transport mechanisms remain controversial. In this work, we integrated 2D chiral perovskites in van der Waals heterostructure based devices to characterize the spin polarized charge transport. Under varying magnetic field, the change in magnetoresistance was observed and revealed to be modulated by polarized spin. The spin transport was correlated with structural anisotropy of 2D chiral perovskite and electrical contact conditions. We hope this work can provide inspiration on realizing spintronic devices based on 2D chiral perovskites.