This article is cited in 2 papers

CONDENSED MATTER

Spintronic detector of linearly polarized microwave radiation based on a ferromagnet/normal metal heterostructure

K. D. Samoylenko^ab, D. A. Volkov^cb, D. A. Gabrielyan^cb, A. A. Matveev^ab, A. R. Safin^cb, D. V. Kalyabin^ab, A. A. Khafizov^d, M. N. Markelova^d, A. R. Kaul'^d, I. E. Moscal'^b, G. A. Ovsyannikov^b, S. A. Nikitov<sup>aeb

a</sup> Moscow Institute of Physics and Technology (National Research University), 141701, Dolgoprudnyi, Moscow region, Russia
^b Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009, Moscow, Russia
^c National Research University Moscow Power Engineering Institute, 111250, Moscow, Russia
^d Faculty of Chemistry, Moscow State University, 119991, Moscow, Russia
^e Magnetic Metamaterials Laboratory, Saratov State University, 410012, Saratov, Russia

Abstract: The effect of the polarization of microwave radiation on the efficiency of ferromagnetic resonance excitation and spin pumping from a ferromagnetic lutetium garnet Lu$_3$Fe$_5$O$_{12}$ thin film into normal metal Pt has been studied. The voltages created due to the inverse spin Hall effect in a Pt layer have been measured when the polarization of the exciting electromagnetic wave changed from linear to circular. It has been experimentally established and theoretically confirmed that the electromagnetic radiation component perpendicular to the static magnetization direction determines the nonzero potential difference created in the normal metal layer. The considered “ferromagnet–normal metal” heterostructure can be used as a tunable resonant detector of polarized microwave radiation and as polarization filters. The data on the practical application of Lu$_3$Fe$_5$O$_{12}$/Pt are extremely relevant for modern telecommunications.

Received: 12.12.2024
Revised: 07.02.2025
Accepted: 27.02.2025

DOI: 10.31857/S0370274X25040076

 English version: Journal of Experimental and Theoretical Physics Letters, 2025, 121:7, 554–561