We propose and demonstrate spin manipulation by magnetically controlled modulation of pure spin currents in cobalt/copper lateral spin valves, fabricated on top of the magnetic insulator Y3Fe5O12 (YIG). The direction of the YIG magnetization can be controlled by a small magnetic field. We observe a clear modulation of the non-local resistance as a function of the orientation of the YIG magnetization with respect to the polarization of the spin current. Such a modulation can only be explained by assuming a finite spin-mixing conductance at the Cu/YIG interface, as it follows from the solution of the spin-diffusion equation. These results open a new path towards the development of spin logics.
@article{arxiv.1404.2311,
title = {Modulation of pure spin currents with a ferromagnetic insulator},
author = {Estitxu Villamor and Miren Isasa and Saül Vélez and Amilcar Bedoya-Pinto and Paolo Vavassori and Luis E. Hueso and F. Sebastian Bergeret and Fèlix Casanova},
journal= {arXiv preprint arXiv:1404.2311},
year = {2015}
}
Comments
5 pages and 4 figures + supplemental material (10 pages, 7 figures)