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Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons

Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons

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BOSSINI, Davide, Stefano DAL CONTE, Yusuke HASHIMOTO, Andrea SECCHI, Roman V. PISAREV, Theo RASING, Giulio CERULLO, Aleksei V. KIMEL, 2016. Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons. In: Nature Communications. Nature Publishing Group. 7(1), 10645. eISSN 2041-1723. Available under: doi: 10.1038/ncomms10645

@article{Bossini2016-02-05Macro-53335, title={Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons}, year={2016}, doi={10.1038/ncomms10645}, number={1}, volume={7}, journal={Nature Communications}, author={Bossini, Davide and Dal Conte, Stefano and Hashimoto, Yusuke and Secchi, Andrea and Pisarev, Roman V. and Rasing, Theo and Cerullo, Giulio and Kimel, Aleksei V.}, note={Article Number: 10645} }

Bossini, Davide The understanding of how the sub-nanoscale exchange interaction evolves in macroscale correlations and ordered phases of matter, such as magnetism and superconductivity, requires to bridging the quantum and classical worlds. This monumental challenge has so far only been achieved for systems close to their thermodynamical equilibrium. Here we follow in real time the ultrafast dynamics of the macroscale magnetic order parameter in the Heisenberg antiferromagnet KNiF<sub>3</sub> triggered by the impulsive optical generation of spin excitations with the shortest possible nanometre wavelength and femtosecond period. Our magneto-optical pump-probe experiments also demonstrate the coherent manipulation of the phase and amplitude of these femtosecond nanomagnons, whose frequencies are defined by the exchange energy. These findings open up opportunities for fundamental research on the role of short-wavelength spin excitations in magnetism and strongly correlated materials; they also suggest that nanospintronics and nanomagnonics can employ coherently controllable spin waves with frequencies in the 20 THz domain. Rasing, Theo Dal Conte, Stefano Hashimoto, Yusuke Kimel, Aleksei V. eng 2021-04-01T12:31:12Z 2016-02-05 Attribution 4.0 International Pisarev, Roman V. Cerullo, Giulio 2021-04-01T12:31:12Z Secchi, Andrea Macrospin dynamics in antiferromagnets triggered by sub-20 femtosecond injection of nanomagnons Dal Conte, Stefano Kimel, Aleksei V. Pisarev, Roman V. Cerullo, Giulio Bossini, Davide Rasing, Theo Hashimoto, Yusuke Secchi, Andrea

Dateiabrufe seit 01.04.2021 (Informationen über die Zugriffsstatistik)

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