Resonant phonon-magnon interactions in freestanding metal-ferromagnet multilayers acting as acoustic cavities
- While most ultrafast time-resolved optical pump-probe experiments in magnetic materials reveal the spatially homogeneous magnetization dynamics of ferromagnetic resonance (FMR), here we explore the magneto-elastic generation of GHz-to-THz frequency spin waves (exchange magnons). Using analytical magnon oscillator equations, we apply time-domain and frequency-domain approaches to quantify theWhile most ultrafast time-resolved optical pump-probe experiments in magnetic materials reveal the spatially homogeneous magnetization dynamics of ferromagnetic resonance (FMR), here we explore the magneto-elastic generation of GHz-to-THz frequency spin waves (exchange magnons). Using analytical magnon oscillator equations, we apply time-domain and frequency-domain approaches to quantify the results of ultrafast time-resolved optical pump-probe experiments in free-standing ferromagnetic thin films. Simulations show excellent agreement with the experiment, provide acoustic and magnetic (Gilbert) damping constants and highlight the role of symmetry-based selection rules in phonon-magnon interactions. The analysis is extended to hybrid multilayer structures to explore the limits of resonant phonon-magnon interactions up to THz frequencies.…
Document Type: | Conference Proceeding |
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Conference Type: | Konferenzartikel |
Zitierlink: | https://opus.hs-offenburg.de/8416 | Bibliografische Angaben |
Title (English): | Resonant phonon-magnon interactions in freestanding metal-ferromagnet multilayers acting as acoustic cavities |
Conference: | SPIE Nanoscience + Engineering (20-25 August 2023 : San Diego, California, United States) |
Author: | Antonia Ghita, Tudor-Gabriel Mocioi, Urban Vernik, Alexey M. LomonosovStaff MemberORCiDGND, Jiwan Kim, Paolo Vavassori, Vasily Temnov |
Year of Publication: | 2023 |
Creating Corporation: | Society of Photo-Optical Instrumentation Engineers |
Place of publication: | SPIE |
Publisher: | Bellingham, Washington, USA |
First Page: | 1265609-1 |
Last Page: | 1265609-15 |
Article Number: | 1265609 |
Parent Title (English): | Proceedings of SPIE |
Editor: | Jean-Eric Wegrowe, Joseph S. Friedman, Manijeh Razeghi |
Volume: | 12656 |
ISBN: | 9781510665262 (Print) |
ISBN: | 978151066527 (Elektronisch) |
ISSN: | 0277-786X (Print) |
ISSN: | 1996-756X (Elektronisch) |
DOI: | https://doi.org/10.1117/12.2682306 |
URL: | https://www.researchgate.net/publication/374284696 |
Language: | English | Inhaltliche Informationen |
Institutes: | Fakultät Wirtschaft (W) |
Institutes: | Bibliografie |
Tag: | Landau-Lifshitz-Gilbert equations; acoustic phonons; exchange magnons; ferromagnetic resonance; magnetization dynamics; magneto-acoustics; ultrafast laser interaction with materials | Formale Angaben |
Relevance: | Konferenzbeitrag: h5-Index < 30 |
Open Access: | Open Access |
Grün | |
Licence (German): | Urheberrechtlich geschützt |
Comment: | Invited Paper |