Origin of Rashba Spin-Orbit Coupling in 2D and 3D Lead Iodide Perovskites.

ABSTRACT: We studied spin dynamics of charge carriers in the superlattice-like Ruddlesden-Popper hybrid lead iodide perovskite semiconductors, 2D (BA)₂(MA)Pb₂I₇ (with MA = CH₃NH₃, and BA = CH₃(CH₂)₃NH₃), and 3D MAPbI₃ using the magnetic field effect (MFE) on conductivity and electroluminescence in their light emitting diodes (LEDs) at cryogenic temperatures. The semiconductors with distinct structural/bulk inversion symmetry breaking, when combined with colossal intrinsic spin-orbit coupling (SOC), theoretically give rise to giant Rashba-type SOC. We found that the magneto-conductance (MC) magnitude increases monotonically with the emission intensity and saturates at ≈0.05% and 0.11% for the

SUBMITTER: Pham MT 

PROVIDER: S-EPMC7080819 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature