Identification and minimization of losses in microscale spin-wave transducers

Kohl Felix; Heinz Björn; Papp Ádám; Erdélyi Róbert; Csaba György; Pirro Philipp: Identification and minimization of losses in microscale spin-wave transducers.
PHYSICAL REVIEW APPLIED, 25 (5). ISSN 2331-7019 (2026)

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Folyóiratcikk

Szerző azonosítók:

Név	ORCID	MTMT szerző azonosító
Kohl Felix	0009-0003-6131-1275
Heinz Björn	0000-0002-0162-1007
Papp Ádám		10045902
Erdélyi Róbert	0000-0003-0202-4084	10025603
Csaba György		10057150
Pirro Philipp	0000-0002-0163-8634

Absztrakt (kivonat):

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.

Folyóirat címe:

PHYSICAL REVIEW APPLIED

Megjelenés éve:

2026

Kötet:

Szám:

ISSN:

2331-7019

Intézmény:

Pázmány Péter Katolikus Egyetem

Kar:

Információs Technológiai és Bionikai Kar (2013.07.-)