@inproceedings{bdae3ef1297a492b8341f4317380e69d,
title = "Resonant phonon-magnon interactions in freestanding metal-ferromagnet multilayers acting as acoustic cavities",
abstract = "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 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.",
keywords = "Landau–Lifshitz–Gilbert equations, acoustic phonons, exchange magnons, ferromagnetic resonance, magnetization dynamics, magneto-acoustics, ultrafast laser interaction with materials",
author = "Antonia Ghita and Mocioi, \{Tudor Gabriel\} and Urban Vernik and Alexey Lomonosov and Jiwan Kim and Paolo Vavassori and Vasily Temnov",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; Spintronics XVI 2023 ; Conference date: 20-08-2023 Through 24-08-2023",
year = "2023",
month = jan,
day = "1",
doi = "10.1117/12.2682306",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jean-Eric Wegrowe and Friedman, \{Joseph S.\} and Manijeh Razeghi",
booktitle = "Spintronics XVI",
}