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arXiv · 1703.05220

Modeling ultrafast all-optical switching in synthetic ferrimagnets

Stefan Gerlach·Laszlo Oroszlany·Denise Hinzke·Steffen Sievering·Sönke Wienholdt·Laszlo Szunyogh·Ulrich Nowak
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Abstract

Based on numerical simulations, we demonstrate thermally induced magnetic switching in synthetic ferrimagnets composed of multilayers of rare-earth and transition metals. Our findings show that deterministic magnetization reversal occurs above a certain threshold temperature if the ratio of transition metal atoms to rare-earth atoms is sufficiently large. Surprisingly, the total thickness of the multilayer system has little effect on the occurence of switching. We further provide a simple argument to explain the temperature dependence of the reversal process.

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Stefan Gerlach, Laszlo Oroszlany, Denise Hinzke, Steffen Sievering, Sönke Wienholdt, Laszlo Szunyogh, Ulrich Nowak. 2017-03-15. Modeling ultrafast all-optical switching in synthetic ferrimagnets. https://doi.org/10.1103/physrevb.95.224435

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