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- W257219783 abstract "Magnetization control without applying magnetic fields has potential for applications in sensors and devices. In Fe/MnAs/GaAs(001), the Fe magnetization can be modified by acting on the MnAs microstructure via temperature control, without applying external magnetic fields. Here we use an optical laser pulse to vary the local temperature and an x-ray free-electron laser pulse to probe the induced magnetic and structural dynamics in a time-resolved resonant scattering experiment, both pulses having ~100 fs duration. Modifications of the MnAs microstructure take place within a few ps, followed by a slower dynamics driven by thermal diffusion. We show that a single optical laser pulse can reverse the Fe magnetization locally, the process being driven not by the fast modifications of the MnAs structure, but rather by its slower return to equilibrium." @default.
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- W257219783 date "2015-05-12" @default.
- W257219783 modified "2023-09-23" @default.
- W257219783 title "Optically induced Fe magnetization reversal in Fe/MnAs/GaAs(001)" @default.
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- W257219783 doi "https://doi.org/10.1117/12.2184710" @default.
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