Angle resolved relaxation of spin currents by antiferromagnets in spin valves
Mesoscale and Nanoscale Physics
2019-12-18 v3
Abstract
We observe and analyze tunable relaxation of a pure spin current by an antiferromagnet in spin-valves. This is achieved by carefully controlling the angle between a resonantly excited ferromagnetic layer pumping the spin current and the N\'eel vector of the antiferromagnetic layer. The effect is observed as an angle-dependent spin-pumping contribution to the ferromagnetic resonance linewidth. An interplay between spin-mixing conductance and, often disregarded, longitudinal spin conductance is found to underlie our observations, which is in agreement with a recent prediction for related ferromagnetic spin valves.
Cite
@article{arxiv.1906.03124,
title = {Angle resolved relaxation of spin currents by antiferromagnets in spin valves},
author = {Dmytro M. Polishchuk and Akashdeep Kamra and Taras I. Polek and Arne Brataas and Vladislav Korenivski},
journal= {arXiv preprint arXiv:1906.03124},
year = {2019}
}
Comments
6 pages, 3 figures, Supplemental Material: 4 pages, 3 figures