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

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JournalPhysical Review Letters
DateAccepted/In press - 12 May 2020
DatePublished (current) - 11 Jun 2020
Volume124
Original languageEnglish

Abstract

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

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© 2020 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

    Research areas

  • spintronics, lateral spin valves, spin valves, spin Hall effect, spin galvanic effect, Edelstein effect, spin-orbit coupling, spin transport

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