Thermally induced all-optical ferromagnetic resonance in thin YIG films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00571639" target="_blank" >RIV/68378271:_____/23:00571639 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10474783

Výsledek na webu

<a href="https://hdl.handle.net/11104/0345986" target="_blank" >https://hdl.handle.net/11104/0345986</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1367-2630/acc203" target="_blank" >10.1088/1367-2630/acc203</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally induced all-optical ferromagnetic resonance in thin YIG films

Popis výsledku v původním jazyce

All-optical ferromagnetic resonance (AO-FMR) is a powerful tool for the local detection of micromagnetic parameters, such as magnetic anisotropy, Gilbert damping or spin stiffness. In this work we demonstrate that the AO-FMR method can be used in thin films of yttrium iron garnet (YIG) if a metallic capping layer (Au, Pt) is deposited on top of the film. Magnetization precession is triggered by heating of the metallic layer with femtosecond laser pulses. The heat pulse modifies the magneto-crystalline anisotropy of the YIG film and shifts the quasi-equilibrium orientation of the magnetization, which results in precessional magnetization dynamics. The laser-induced magnetization precession corresponds to a uniform (Kittel) magnon mode, with the precession frequency determined by the magnetic anisotropy of the material as well as the external magnetic field, and the damping time set by a Gilbert damping parameter.n

Název v anglickém jazyce

Thermally induced all-optical ferromagnetic resonance in thin YIG films

Popis výsledku anglicky

All-optical ferromagnetic resonance (AO-FMR) is a powerful tool for the local detection of micromagnetic parameters, such as magnetic anisotropy, Gilbert damping or spin stiffness. In this work we demonstrate that the AO-FMR method can be used in thin films of yttrium iron garnet (YIG) if a metallic capping layer (Au, Pt) is deposited on top of the film. Magnetization precession is triggered by heating of the metallic layer with femtosecond laser pulses. The heat pulse modifies the magneto-crystalline anisotropy of the YIG film and shifts the quasi-equilibrium orientation of the magnetization, which results in precessional magnetization dynamics. The laser-induced magnetization precession corresponds to a uniform (Kittel) magnon mode, with the precession frequency determined by the magnetic anisotropy of the material as well as the external magnetic field, and the damping time set by a Gilbert damping parameter.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/LTC20026" target="_blank" >LTC20026: Interplay between optical and magneto-transport phenomena in strongly spin-orbit coupled systems</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

New Journal of Physics

ISSN

1367-2630

e-ISSN

1367-2630

Svazek periodika

25

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

033016

Kód UT WoS článku

000953586800001

EID výsledku v databázi Scopus

2-s2.0-85150870789