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Laser-induced intersite spin transfer

MPG-Autoren
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Dewhurst,  John Kay       
Max Planck Institute of Microstructure Physics, Max Planck Society;

Elliott,  Peter
Max Planck Institute of Microstructure Physics, Max Planck Society;

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Gross,  Eberhard K. U.
Max Planck Institute of Microstructure Physics, Max Planck Society;

Sharma,  Sangeeta
Max Planck Institute of Microstructure Physics, Max Planck Society;

Externe Ressourcen

https://doi.org/10.1021/acs.nanolett.7b05118
(Verlagsversion)

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acs.nanolett.7b05118.pdf
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Zitation

Dewhurst, J. K., Elliott, P., Shallcross, S., Gross, E. K. U., & Sharma, S. (2018). Laser-induced intersite spin transfer. Nano Letters, 18(3), 1842-1848. doi:10.1021/acs.nanolett.7b05118.


Zitierlink: https://hdl.handle.net/21.11116/0000-0009-28DC-3
Zusammenfassung
Laser pulses induce spin-selective charge flow that we show to generate dramatic changes in the magnetic structure of materials, including a switching of magnetic order from antiferromagnetic (AFM) to transient ferromagnetic (FM) in multisub-lattice systems. The microscopic mechanism underpinning this ultrafast switching of magnetic order is dominated by spin-selective charge transfer from one magnetic sublattice to another. Because this spin modulation is purely optical in nature (i.e., not mediated indirectly via the spin–orbit interaction) this is one of the fastest means of manipulating spin by light. We further demonstrate this mechanism to be universally applicable to AFM, FM, and ferri-magnets in both multilayer and bulk geometry and provide three rules that encapsulate early-time magnetization dynamics of multisub-lattice systems.