Advanced magnetic recording paradigms typically use large temperature changes to drive switching which is detrimental to device longevity, hence finding non-thermal routes is crucial for future applications. By employing atomistic spin-lattice dynamics simulations, we show efficient coherent magnetisation switching triggered by THz phonon excitation in insulating single species materials. The key ingredient is excitation near the P-point of the spectrum in conditions where spins typically cannot be excited and when manifold k phonon modes are accessible at the same frequency. Our model predicts the necessary ingredients for low-dissipative switching and provides new insight into THz-excited spin dynamics.
@article{arxiv.2209.04312,
title = {A route to minimally dissipative switching in magnets via THz phonon pumping},
author = {Mara Strungaru and Matthew O A Ellis and Sergiu Ruta and Richard F L Evans and Roy W Chantrell and Oksana Chubykalo-Fesenko},
journal= {arXiv preprint arXiv:2209.04312},
year = {2023}
}