Magnetic switching dynamics in a ferrimagnetic two sub-lattice model including ultrafast exchange scattering
Materials Science
2015-03-26 v2
Abstract
We study the heat-induced magnetization dynamics in a toy model of a ferrimagnetic alloy, which includes localized spins antiferromagnetically coupled to an itinerant carrier system with a Stoner gap. We determine the one-particle spin-density matrix including exchange scattering between localized and itinerant bands as well as scattering with phonons. While a transient ferromagnetic-like state can always be achieved by a sufficiently strong excitation, this transient ferromagnetic-like state only leads to magnetization switching for model parameters that also yield a compensation point in the equilibrium M(T) curve.
Keywords
Cite
@article{arxiv.1410.5745,
title = {Magnetic switching dynamics in a ferrimagnetic two sub-lattice model including ultrafast exchange scattering},
author = {Alexander Baral and Hans Christian Schneider},
journal= {arXiv preprint arXiv:1410.5745},
year = {2015}
}