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Ultrafast electron microscopy for probing magnetic dynamics

MPS-Authors
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Gaida,  John H.
Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society;

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Möller,  Marcel
Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society;

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Feist,  Armin
Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society;

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Ropers,  Claus       
Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society;

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s43577-021-00166-5.pdf
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Citation

Harvey, T. R., da Silva, N. R., Gaida, J. H., Möller, M., Feist, A., Schäfer, S., et al. (2021). Ultrafast electron microscopy for probing magnetic dynamics. MRS Bulletin, 46, 711-719. doi:10.1557/s43577-021-00166-5.


Cite as: https://hdl.handle.net/21.11116/0000-000B-5443-B
Abstract
The spatial features of ultrafast changes in magnetic textures carry detailed information on microscopic couplings and energy transport mechanisms. Electrons excel in imaging such picosecond or shorter processes at nanometer length scales. We review the range of physical interactions that produce ultrafast magnetic contrast with electrons, and specifically highlight the recent emergence of ultrafast Lorentz transmission electron microscopy. From the fundamental processes involved in demagnetization at extremely short timescales to skyrmion-based devices, we show that ultrafast electron imaging will be a vital tool in solving pressing problems in magnetism and magnetic materials where nanoscale inhomogeneity, microscopic field measurement, non-equilibrium behavior or dynamics are involved.