Frequency scaling and figure of merit for ultrafast magneto-acoustics

Tudor-Gabriel Mocioi; Antonia Ghita; Alexey Lomonosov; Jiwan Kim; Paolo Vavassori; Vasily Temnov

doi:10.1117/12.3021494

10 June 2024 Frequency scaling and figure of merit for ultrafast magneto-acoustics

Tudor-Gabriel Mocioi, Antonia Ghita, Alexey Lomonosov, Jiwan Kim, Paolo Vavassori, Vasily Temnov

Proceedings Volume 12992, Advances in Ultrafast Condensed Phase Physics IV; 1299202 (2024) https://doi.org/10.1117/12.3021494
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

The quest for manipulation of magnetization on ultrafast timescales faces many technological challenges. Successful achievement thereof could shed light on novel fundamental phenomena, such as inertial magnetization dynamics, as well as accelerate technological advancements towards higher information processing rates. One of the recent approaches towards this end concerns excitation of magnetization dynamics via laser-induced picosecond acoustic pulses, which has given birth to the field of ultrafast magneto-acoustics. Considerable progress has been made in the field from an experimental point of view, as well as from the perspective of theoretical modelling. In this talk, we aim to review some of the aforementioned progress and propose the frequency dependent cooperativity parameter (strong coupling regime) to measure the efficiency of resonantly enhanced phonon-magnon interactions in the GHz-to-THz frequency range.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tudor-Gabriel Mocioi, Antonia Ghita, Alexey Lomonosov, Jiwan Kim, Paolo Vavassori, and Vasily Temnov "Frequency scaling and figure of merit for ultrafast magneto-acoustics", Proc. SPIE 12992, Advances in Ultrafast Condensed Phase Physics IV, 1299202 (10 June 2024); https://doi.org/10.1117/12.3021494

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