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arXiv · 2012.15107

RF signal detector and energy harvester based on a spin-torque diode with perpendicular magnetic anisotropy

P. Yu. Artemchuk·O. V. Prokopenko·E. N. Bankowski·T. J. Meitzler·V. S. Tyberkevych·A. N. Slavin
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Abstract

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.

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P. Yu. Artemchuk, O. V. Prokopenko, E. N. Bankowski, T. J. Meitzler, V. S. Tyberkevych, A. N. Slavin. 2020-12-30. RF signal detector and energy harvester based on a spin-torque diode with perpendicular magnetic anisotropy. https://doi.org/10.1063/5.0042390

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