Publication result detail

Elimination of substrate-induced ferromagnetic resonance linewidth broadening in the epitaxial system YIG-GGG by microstructuring

SCHMOLL, D.; SERHA, R.; PANDA, J.; VORONOV, A.; DUBS, C.; URBÁNEK, M.; CHUMAK, A.

Original Title

Elimination of substrate-induced ferromagnetic resonance linewidth broadening in the epitaxial system YIG-GGG by microstructuring

English Title

Elimination of substrate-induced ferromagnetic resonance linewidth broadening in the epitaxial system YIG-GGG by microstructuring

Type

WoS Article

Original Abstract

Modern quantum technologies and hybrid quantum systems offer the opportunity to utilize magnons on the level of single excitations. Long lifetimes, low decoherence rates, and a strong coupling rate to other subsystems propose the ferrimagnet yttrium iron garnet (YIG), grown on a gadolinium gallium garnet (GGG) substrate, as a suitable platform to host magnonic quantum states. However, the magnetic damping at cryogenic temperatures significantly increases due to the paramagnetic character and the highly inhomogeneous stray field of GGG, as recent experiments and simulations pointed out. Here, we report on temperature dependent ferromagnetic resonance spectroscopy studies in YIG-GGG thin films with different sample geometries. We experimentally demonstrate how to eliminate the asymmetric stray field-induced linewidth broadening via microstructuring of the YIG film. Additionally, our experiments reveal evidence of a non-Gilbert-like behavior of the linewidth at cryogenic temperatures, independent of the inhomogeneous GGG stray field.

English abstract

Modern quantum technologies and hybrid quantum systems offer the opportunity to utilize magnons on the level of single excitations. Long lifetimes, low decoherence rates, and a strong coupling rate to other subsystems propose the ferrimagnet yttrium iron garnet (YIG), grown on a gadolinium gallium garnet (GGG) substrate, as a suitable platform to host magnonic quantum states. However, the magnetic damping at cryogenic temperatures significantly increases due to the paramagnetic character and the highly inhomogeneous stray field of GGG, as recent experiments and simulations pointed out. Here, we report on temperature dependent ferromagnetic resonance spectroscopy studies in YIG-GGG thin films with different sample geometries. We experimentally demonstrate how to eliminate the asymmetric stray field-induced linewidth broadening via microstructuring of the YIG film. Additionally, our experiments reveal evidence of a non-Gilbert-like behavior of the linewidth at cryogenic temperatures, independent of the inhomogeneous GGG stray field.

Keywords

magnonics, FMR, spin waves, YIG, damping, stray field

Key words in English

magnonics, FMR, spin waves, YIG, damping, stray field

Authors

SCHMOLL, D.; SERHA, R.; PANDA, J.; VORONOV, A.; DUBS, C.; URBÁNEK, M.; CHUMAK, A.

RIV year

2026

Released

01.06.2025

Periodical

Low Temperature Physics

Volume

6

Number

51

State

United States of America

Pages from

724

Pages to

730

Pages count

7

URL

https://pubs.aip.org/aip/ltp/article-abstract/51/6/724/3348222/Elimination-of-substrate-induced-ferromagnetic?redirectedFrom=fulltext

BibTex

@article{BUT199176,
  author="{} and  {} and  {} and Jaganandha {Panda} and  {} and  {} and Michal {Urbánek} and  {}",
  title="Elimination of substrate-induced ferromagnetic resonance linewidth broadening in the epitaxial system YIG-GGG by microstructuring",
  journal="Low Temperature Physics",
  year="2025",
  volume="6",
  number="51",
  pages="724--730",
  doi="10.1063/10.0036749",
  issn="1063-777X",
  url="https://pubs.aip.org/aip/ltp/article-abstract/51/6/724/3348222/Elimination-of-substrate-induced-ferromagnetic?redirectedFrom=fulltext"
}