Detail publikačního výsledku

YIG/CoFeB Bilayer Magnonic Isolator

ZENBAA, N.; LEVCHENKO, K.; PANDA, J.; DAVÍDKOVÁ, K.; RUHWEDEL, M.; KNAUER, S.; LINDNER, M.; DUBS, C.; WANG, Q.; URBÁNEK, M.; PIRRO, P.; CHUMAK, A.

Originální název

YIG/CoFeB Bilayer Magnonic Isolator

Anglický název

YIG/CoFeB Bilayer Magnonic Isolator

Druh

Článek WoS

Originální abstrakt

We demonstrate a magnonic isolator based on a bilayer structure of yttrium iron garnet (YIG) and cobalt iron boron (CoFeB). The bilayer exhibits pronounced nonreciprocal spin-wave propagation, enabled by dipolar coupling and the magnetic properties of the two layers. The YIG layer provides low damping and efficient spin-wave propagation, whereas the CoFeB layer introduces strong magnetic anisotropy, critical for achieving the isolator functionality. Experimental results, supported by numerical simulations, show unidirectional propagation of magneto-static surface spin waves, significantly suppressing backscattered waves. This behavior was confirmed through wavevector-resolved and microfocused Brillouin light scattering measurements and is supported by numerical simulations. The developed YIG/SiO2/CoFeB bilayer magnonic isolator demonstrates the feasibility of leveraging nonreciprocal spin-wave dynamics for functional magnonic devices, paving the way for energy-efficient, wave-based signal processing technologies.

Anglický abstrakt

We demonstrate a magnonic isolator based on a bilayer structure of yttrium iron garnet (YIG) and cobalt iron boron (CoFeB). The bilayer exhibits pronounced nonreciprocal spin-wave propagation, enabled by dipolar coupling and the magnetic properties of the two layers. The YIG layer provides low damping and efficient spin-wave propagation, whereas the CoFeB layer introduces strong magnetic anisotropy, critical for achieving the isolator functionality. Experimental results, supported by numerical simulations, show unidirectional propagation of magneto-static surface spin waves, significantly suppressing backscattered waves. This behavior was confirmed through wavevector-resolved and microfocused Brillouin light scattering measurements and is supported by numerical simulations. The developed YIG/SiO2/CoFeB bilayer magnonic isolator demonstrates the feasibility of leveraging nonreciprocal spin-wave dynamics for functional magnonic devices, paving the way for energy-efficient, wave-based signal processing technologies.

Klíčová slova

Magnetostatics; Magnetostatic waves; Measurement by laser beam; Magnetomechanical effects; Magnetic field measurement; Magnonics; Saturation magnetization; Dispersion; Isolators; Surface waves; Nanomagnetics; magnonics; nonreciprocity; spin waves

Klíčová slova v angličtině

Magnetostatics; Magnetostatic waves; Measurement by laser beam; Magnetomechanical effects; Magnetic field measurement; Magnonics; Saturation magnetization; Dispersion; Isolators; Surface waves; Nanomagnetics; magnonics; nonreciprocity; spin waves

Autoři

ZENBAA, N.; LEVCHENKO, K.; PANDA, J.; DAVÍDKOVÁ, K.; RUHWEDEL, M.; KNAUER, S.; LINDNER, M.; DUBS, C.; WANG, Q.; URBÁNEK, M.; PIRRO, P.; CHUMAK, A.

Rok RIV

2026

Vydáno

02.05.2025

Periodikum

IEEE Magnetics Letters

Svazek

16

Číslo

1

Stát

Spojené státy americké

Strany počet

5

URL

https://ieeexplore.ieee.org/document/10930529

Plný text v Digitální knihovně

http://hdl.handle.net/11012/251025

BibTex

@article{BUT197892,
  author="Noura {Zenbaa} and Khrystyna O. {Levchenko} and Jaganandha {Panda} and Kristýna {Davídková} and Moritz {Ruhwedel} and Sebastian {Knauer} and Morris {Lindner} and Carsten {Dubs} and Qi {Wang} and Michal {Urbánek} and Phillip {Pirro} and Andrii V. {Chumak}",
  title="YIG/CoFeB Bilayer Magnonic Isolator",
  journal="IEEE Magnetics Letters",
  year="2025",
  volume="16",
  number="1",
  pages="5",
  doi="10.1109/LMAG.2025.3551990",
  issn="1949-307X",
  url="https://ieeexplore.ieee.org/document/10930529"
}