Spin diffusion length of Permalloy using spin absorption in lateral spin valves

Abstract

We employ the spin absorption technique in lateral spin valves to extract the spin diffusion length of Permalloy (Py) as a function of temperature and resistivity. A linear dependence of the spin diffusion length with conductivity of Py is observed, evidencing that Elliott-Yafet is the dominant spin relaxation mechanism in Permalloy. Completing the data set with additional data found in literature, we obtain ${\lambda }_{Py}=(0.91\pm 0.04)(f\Omega m^2)/{\rho }_{Py}$.

8 pages, 4 figures, 2 tables

References in corpus (4)

• Temperature dependence of spin diffusion length and spin Hall angle in Au and Pt
• Control of spin injection by direct current in lateral spin valves
• Contribution of defects to the spin relaxation in copper nanowires
• Spin transport enhancement by controlling the Ag growth in lateral spin valves

Cited by in corpus (2)

• Giant spin Hall angle in the Heusler alloy Weyl ferromagnet Co${}_2$MnGa
• Calculating spin transport properties from first principles: spin currents