Recording of spin current in ferromagnetic-metal–normal-metal film structures
Phys. Rev. B 113, 224404 – Published 1 June, 2026
DOI: https://doi.org/10.1103/rttt-wl59
Abstract
This paper proposes a technique for identifying the contributions of various physical phenomena to the total electrical potential difference that arises between electrical contacts at the ends of a ferromagnetic-metal/nonmagnetic-metal film structure under ferromagnetic resonance (FMR) conditions. The technique is based on a combined analysis of both FMR spectra and electrical potential difference signals. This technique allows for the use of two procedures, each providing a complete set of the desired information. Both procedures of the proposed technique were applied to a / film structure grown epitaxially in a single cycle on a single-crystal substrate. Presented work shows that in this structure the electric voltage signal contains contributions from three physical processes: the inverse spin Hall effect, the anomalous Hall effect and anisotropic magnetoresistance. The quantitative agreement between the obtained results confirms the validity of the analytical expressions used.