Optically Induced Static Magnetization in Metal Halide Perovskite for Spin-Related Optoelectronics.

ABSTRACT: Understanding the feasibility to couple semiconducting and magnetic properties in metal halide perovskites through interface design opens new opportunities for creating the next generation spin-related optoelectronics. In this work, a fundamentally new phenomenon of optically induced magnetization achieved by coupling photoexcited orbital magnetic dipoles with magnetic spins at perovskite/ferromagnetic interface is discovered. The depth-sensitive polarized neutron reflectometry combined with in situ photoexcitation setup, constitutes key evidence of this novel effect. It is demonstrated that a circularly polarized photoexcitation induces a stable magnetization signal within the depth up to 7.5 nm into the surface of high-quality perovskite (MAPbBr₃) film underneath a ferromagnet

SUBMITTER: Wang M 

PROVIDER: S-EPMC8188215 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature