Ultrafast electron microscopy for probing magnetic dynamics
| Autor: | Nara Rubiano da Silva, John H. Gaida, Marcel Möller, Armin Feist, Tyler R. Harvey, Claus Ropers, Sascha Schäfer |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Condensed matter physics Field (physics) Magnetism Skyrmion Mechanical Engineering Demagnetizing field Electron Materials Engineering Condensed Matter Physics Macromolecular and Materials Chemistry Transmission electron microscopy Picosecond General Materials Science Physical and Theoretical Chemistry Ultrashort pulse Applied Physics |
| Zdroj: | MRS Bulletin MRS Bulletin, vol 46, iss 8 |
| Popis: | 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. Graphic abstract |
| Databáze: | OpenAIRE |
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