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    Recording of spin current in ferromagnetic-metal–normal-metal film structures

    V. V. Demidov and T. A. Shaikhulov

    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 La0.7Sr0.3MnO3/SrIrO3 film structure grown epitaxially in a single cycle on a single-crystal NdGaO3 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.

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