Keller, M.
, Gerace, K.
, Arora, M.
, Shaw, J.
and Silva, T.
(2019),
Near-Unity Spin Hall Ratio in Ni$_x$Cu$_{1-x}$ Alloys, Physical Review B, [online], https://doi.org/10.1103/PhysRevB.99.214411
(Accessed April 24, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Near-Unity Spin Hall Ratio in Ni$_x$Cu$_{1-x}$ Alloys
Published
Author(s)
, Katy Gerace, , ,
Abstract
We report a large spin Hall effect in the 3$d$ transition metal alloy Ni$_x$Cu$_{1-x}$ for $x \in \{ 0.3,0.75\} $, detected via the ferromagnetic resonance of a permalloy (Py = Ni$_{80}$Fe$_{20}$) film deposited in a bilayer with the alloy. A thickness series at $x$ = 0.6, for which the alloy is paramagnetic at room temperature, allows us to determine the spin Hall ratio ${\theta _{{\text{SH}}}} \approx 1$, spin diffusion length ${\lambda _{\text{s}}}$, spin mixing conductance $G_{ \uparrow \downarrow }^{}$, and damping due to spin memory loss ${\alpha _{{\text{SML}}}}$. We compare our results with similar experiments on Py/Pt bilayers measured using the same method.Citation
Physical Review B
Volume
99
Issue
21
Pub Type
Journals
Download Paper
Keywords
spin Hall effect, spin memory loss, spin pumping
Citation
Created June 7, 2019, Updated July 2, 2019