Ultrafast dynamics of moments in bulk ferromagnets
Phys. Rev. B 112, 014435 – Published 18 July, 2025
DOI: https://doi.org/10.1103/7dvv-zkhv
Abstract
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.
