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arXiv · 1906.10448

Unambiguous Electrical Detection of Spin-Charge Conversion in Lateral Spin-Valves

Stuart A. Cavill·Chunli Huang·Manuel Offidani·Yu-Hsuan Lin·Miguel A. Cazalilla·Aires Ferreira
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Abstract

Efficient detection of spin-charge conversion is crucial for advancing our understanding of emergent phenomena in spin-orbit-coupled nanostructures. Here, we provide proof of principle of an electrical detection scheme of spin-charge conversion that enables full disentanglement of competing spin-orbit coupling transport phenomena in diffusive lateral channels i.e. the inverse spin Hall effect (ISHE) and the spin galvanic effect (SGE). A suitable detection geometry in an applied oblique magnetic field is shown to provide direct access to spin-charge transport coefficients through a simple symmetry analysis of the output non-local resistance. The scheme is robust against tilting of the spin-injector magnetization, disorder and spurious non-spin related contributions to the non-local signal, and can be used to probe spin-charge conversion effects in both spin-valve and hybrid optospintronic devices.

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Stuart A. Cavill, Chunli Huang, Manuel Offidani, Yu-Hsuan Lin, Miguel A. Cazalilla, Aires Ferreira. 2019-06-25. Unambiguous Electrical Detection of Spin-Charge Conversion in Lateral Spin-Valves. https://doi.org/10.1103/physrevlett.124.236803

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