Owing to their large spin-orbit coupling , the lead halide hybrid perovskites are of interest for applications in semiconductor spintronics and spin-optoelectronics. While the photophysical properties of these materials have been studied extensively in recent years due to their potential for solution-processed, high-efficiency photovoltaic applications , much less is known about their spin-related properties [3-6]. Our studies of the spin-dependent carrier kinetics in butylammonium methylammonium lead iodide perovskite  indicate dominant precessional spin relaxation tied to the Rashba effect. Our recent measurements of the coherent carrier kinetics in 3D CH3NH3PbI3also suggest a role played by the Rashba splitting on the rate of interband dephasing. These findings point to the need for further studies of the influence of the strong spin-orbit coupling on the charge and spin dynamics in this family of materials.
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