Spin dependent transport characterization in metallic lateral spin valves using 1D and 3D modeling

Abstract

We present the analysis of the spin signals obtained in NiFe based metallic lateral spin valves. We exploit the spin dependent diffusive equations in both the conventional 1D analytic modeling as well as in 3D Finite Element Method simulations. Both approaches are used for extracting the spin diffusion length $l_{sf}^N$ and the effective spin polarization $P_{eff}$ in Py/Al, Py/Cu and Py/Au based lateral nano-structures at both $300K$ and $77K$. Both the analytic modeling and 3D Finite Element Method simulations give consistent results. Combination of both models provides a powerful tool for reliable spin transport characterization in all metallic spin valves and gives an insight into the spin/charge current and spin accumulations 3D distributions in these devices. We provide the necessary ingredients to develop the 3D finite element modeling of diffusive spin transport.

8 pages, 6 figures

References in corpus (13)

• Direct electronic measurement of the spin Hall effect
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Cited by in corpus (5)

• Measurement of the Spin Absorption Anisotropy in Lateral Spin Valves
• Direct imaging of the ac component of the pumped spin polarization with element specificity
• Quantification of spin-charge interconversion in highly resistive sputtered Bi${}_x$Se${}_{1-x}$ with non-local spin valves
• Impact of the out-of-plane conductivity on spin transport evaluation in a van der Waals material
• Large spin-charge interconversion induced by interfacial spin-orbit coupling in a highly conducting all-metallic system