We demonstrate theoretically that in a spintronic diode (SD), having a free magnetic layer with perpendicular magnetic anisotropy of the first and second order and no external bias magnetic field, the out-of-plane regime of magnetization precession can be excited by sufficiently large (exceeding a certain threshold) RF signals with the frequencies <~250 MHz. We also show that such a device can operate as a broadband energy harvester capable of converting incident RF power into a DC power with the conversion efficiency of ~5%. The developed analytical theory of the bias-free SD operation can be used for the optimization of high-efficiency RF detectors and energy harvesters based on SDs.
@article{arxiv.2012.15107,
title = {RF signal detector and energy harvester based on a spin-torque diode with perpendicular magnetic anisotropy},
author = {P. Yu. Artemchuk and O. V. Prokopenko and E. N. Bankowski and T. J. Meitzler and V. S. Tyberkevych and A. N. Slavin},
journal= {arXiv preprint arXiv:2012.15107},
year = {2024}
}
Comments
6 pages, 3 figures. Submitted to the Appl. Phys. Lett