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.
|Journal||Physical Review Letters|
|State||Published - Jun 12 2020|
Bibliographical noteFunding Information:
A. F. gratefully acknowledges the financial support from the Royal Society, London through a Royal Society University Research Fellowship. M. O. and A. F. acknowledge funding from Engineering and Physical Sciences Research Council (Grant No. EP/N004817/1). Y.-H. L., C. H., and M. A. C. acknowledge support from the Ministry of Science and Technology of Taiwan through Grants No. 102-2112-M-007-024-MY5 and No. 107-2112-M-007-021-MY5, as well as from the National Center for Theoretical Sciences (NCTS, Taiwan). C. H. acknowledges partial support from the Army Research Office (Grant No. W911NF-16-1-0472).
© 2020 American Physical Society.
ASJC Scopus subject areas
- Physics and Astronomy (all)