Anomalous inverse spin and orbital Hall effects in films with strong uniaxial anisotropy
Phys. Rev. Applied 25, 014065 – Published 28 January, 2026
DOI: https://doi.org/10.1103/mgq4-3449
Abstract
This study investigates the anomalous spin and orbital Hall effects in iron () films with strong in-plane uniaxial anisotropy, highlighting the interactions between spin and orbital currents. Using heterogeneous and structures, fabricated by oblique deposition in a magnetic field, spin-pumping ferromagnetic resonance (SP-FMR) measurements were performed. It was observed that the uniaxial anisotropy enables the emergence of spin-to-charge and orbital-to-charge conversion signals in the out-of-plane configuration, where the spin polarization is parallel to the direction of the spin current. Experimental analysis revealed that orbital dynamics, mediated by orbital Hall conductivity, are more prominent in films due to the low spin-orbit interaction (SOC) and large orbital response. These findings provide fundamental insights for the advancement of orbitronics devices, indicating the potential for controlling orbital and spin currents through magnetic and anisotropic parameters.