Low-cost spintronic devices functioning in zero applied magnetic field are required for bringing the idea of spin-based electronics into the real-world industrial applications. Here we present first microwave measurements performed on nanomagnet devices fabricated by electrodeposition inside porous membranes. In the paper, we discuss in details a microwave resonator consisting of three nanomagnets, which functions in zero external magnetic field. By applying a microwave signal at a particular frequency, the magnetization of the middle nanomagnet experiences the ferromagnetic resonance (FMR), and the device outputs a measurable direct current (spin-torque diode effect). Alternatively, the nanodevice can be used as a microwave oscillator functioning in zero field. In order to test the resonators at microwave frequencies, we developed a simple measurement set-up.
@article{arxiv.0811.2241,
title = {Template nanowires for spintronics applications: nanomagnet microwave resonators functioning in zero applied magnetic field},
author = {A. Mourachkine and O. V. Yazyev and C. Ducati and J. -Ph. Ansermet},
journal= {arXiv preprint arXiv:0811.2241},
year = {2008}
}
Comments
21 pages (main text - 13 pages + Supporting Information)