A robust and efficient model for investigating the ultrafast dynamics of magnetic materials excited by laser pulses has been created, integrating dynamic Landau-Lifshitz-Bloch equations with a quantum thermostat and a two-temperature model. The model has been successfully applied to three archetypal materials in the literature: nickel, cobalt, and iron. Additionally, analysis of the ultrafast dynamic susceptibility tensor indicates that off-diagonal components display specific features depending on whether a continuous external magnetic field is present.
@article{arxiv.2502.07375,
title = {Ultrafast dynamics of moments in bulk ferromagnets},
author = {Mouad Fattouhi and Pascal Thibaudeau and Liliana D. Buda-Prejbeanu},
journal= {arXiv preprint arXiv:2502.07375},
year = {2025}
}