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Identification and minimization of losses in microscale spin-wave transducers

Felix Kohl1,*, Björn Heinz1, Ádám Papp2,3, Róbert Erdélyi2,3, Gyorgy Csaba2,3, and Philipp Pirro1

  • *Contact author: fkohl@rptu.de
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Phys. Rev. Applied 25, 054064 – Published 26 May, 2026

DOI: https://doi.org/10.1103/j5s3-zvhr

Abstract

Magnonics is a promising platform for integrated radio-frequency (rf) devices, leveraging its inherent nonreciprocity and reconfigurability. However, the efficiency of spin-wave transducers driven by rf currents remains a major challenge. In this study, we systematically investigate a spin-wave transducer composed of micrometer-sized rf antennas on yttrium iron garnet films of different thickness—an ideal testbed for integrated magnonic devices. Using propagating spin-wave spectroscopy, we analyze spin-wave transmission, identifying key loss mechanisms and improving device efficiency by reducing ohmic resistance. The resulting improvements enable the reduction of insertion loss to below 10 dB in microscaled spin-wave transducers. At the same time large nonreciprocity can be exploited to achieve significant isolation on the microscale.

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Corrections

24 August, 2026

Correction: The first name of the fifth author contained a spelling error and has been fixed.

Article Text

Supplemental Material

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Outline

Information

Phys. Rev. Applied 25, 054064– Published 26 May, 2026
  • Received 9 July 2025
  • Revised 3 March 2026
  • Accepted 24 April 2026
  • Corrected 24 August 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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