Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect

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2021
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Berritta, Marco
Carva, Karel
Oppeneer, Peter M.
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We explore the possibility of ultrafast, coherent all-optical magnetization switching in antiferromagnets by studying the action of the inverse Faraday effect in CrPt, an easy-plane antiferromagnet. Using a combination of density-functional theory and atomistic spin dynamics simulations, we show how a circularly polarized laser pulse can switch the order parameter of the antiferromagnet within a few hundred femtoseconds. This nonthermal switching takes place on an elliptical path, driven by the staggered magnetic moments induced by the inverse Faraday effect and leading to reliable switching between two perpendicular magnetic states.

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ISO 690DANNEGGER, Tobias, Marco BERRITTA, Karel CARVA, Severin SELZER, Ulrike RITZMANN, Peter M. OPPENEER, Ulrich NOWAK, 2021. Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect. In: Physical Review B. American Physical Society (APS). 2021, 104(6), L060413. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.104.L060413
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@article{Dannegger2021Ultra-54847,
  year={2021},
  doi={10.1103/PhysRevB.104.L060413},
  title={Ultrafast coherent all-optical switching of an antiferromagnet with the inverse Faraday effect},
  number={6},
  volume={104},
  issn={2469-9950},
  journal={Physical Review B},
  author={Dannegger, Tobias and Berritta, Marco and Carva, Karel and Selzer, Severin and Ritzmann, Ulrike and Oppeneer, Peter M. and Nowak, Ulrich},
  note={Article Number: L060413}
}
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