Experimental results of rectification of a constant wave radio frequency (RF) current flowing in a single-layered ferromagnetic wire are presented. We show that a detailed external magnetic field dependence of the RF current induced a direct-current voltage spectrum. The mechanism of the rectification is discussed in a term of the spin transfer torque, and the rectification is closely related to resonant spin wave excitation with the assistant of the spin-polarized RF current. The micromagnetic simulation taking into account the spin transfer torque provides strong evidence which supports the generation of spin wave excitation by the RF current.
@article{arxiv.0710.2172,
title = {Direct current voltage induced by microwave signal in a ferromagnetic wire},
author = {A. Yamaguchi and K. Motoi and H. Miyajima and Y. Nakatani},
journal= {arXiv preprint arXiv:0710.2172},
year = {2007}
}