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

TY - JOUR

T1 - Proposal for Unambiguous Electrical Detection of Spin-Charge Conversion in Lateral Spin Valves

AU - Cavill, Stuart Alan

AU - Huang, Chunli

AU - Offidani, Manuel

AU - Lin, Yu-Hsuan

AU - Cazalilla, Miguel A.

AU - Ferreira, Aires

N1 - © 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.

PY - 2020/6/11

Y1 - 2020/6/11

N2 - 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.

AB - 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.

KW - spintronics

KW - lateral spin valves

KW - spin valves

KW - spin Hall effect

KW - spin galvanic effect

KW - Edelstein effect

KW - spin-orbit coupling

KW - spin transport

U2 - 10.1103/PhysRevLett.124.236803

DO - 10.1103/PhysRevLett.124.236803

M3 - Letter

SN - 0031-9007

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

M1 - 236803

ER -