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arXiv · 1410.5745

Magnetic switching dynamics in a ferrimagnetic two sub-lattice model including ultrafast exchange scattering

Alexander Baral·Hans Christian Schneider
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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.

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Alexander Baral, Hans Christian Schneider. 2015-03-25. Magnetic switching dynamics in a ferrimagnetic two sub-lattice model including ultrafast exchange scattering. https://doi.org/10.1103/physrevb.91.100402

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