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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0199176" target="_blank" >RIV/00216305:26620/26:0199176 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/ltp/article-abstract/51/6/724/3348222/Elimination-of-substrate-induced-ferromagnetic?redirectedFrom=fulltext" target="_blank" >https://pubs.aip.org/aip/ltp/article-abstract/51/6/724/3348222/Elimination-of-substrate-induced-ferromagnetic?redirectedFrom=fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/10.0036749" target="_blank" >10.1063/10.0036749</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

—

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Low Temperature Physics

ISSN

1063-777X

e-ISSN

1090-6517

Svazek periodika

6

Číslo periodika v rámci svazku

51

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

724-730

Kód UT WoS článku

001513718200014

EID výsledku v databázi Scopus

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