Publikation: Imaging of Domain Wall Inertia in Permalloy Half-Ring Nanowires by Time-Resolved Photoemission Electron Microscopy
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2010
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Rhensius, Jan
Backes, Dirk
Heyderman, Laura Jane
Joly, L.
Nolting, Frithjof
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Physical Review Letters. 2010, 104, 067201. Available under: doi: 10.1103/PhysRevLett.104.067201
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Using photoemission electron microscopy, we image the dynamics of a field pulse excited domain wall in a Permalloy nanowire. We find a delay in the onset of the wall motion with respect to the excitation and an oscillatory relaxation of the domain wall back to its equilibrium position, defined by an external magnetic field. The origin of both of these inertia effects is the transfer of energy between energy reservoirs. By imaging the distribution of the exchange energy in the wall spin structure, we determine these reservoirs, which are the basis of the domain wall mass concept.
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RHENSIUS, Jan, Lutz HEYNE, Dirk BACKES, Stephen KRZYK, Laura Jane HEYDERMAN, L. JOLY, Frithjof NOLTING, Mathias KLÄUI, 2010. Imaging of Domain Wall Inertia in Permalloy Half-Ring Nanowires by Time-Resolved Photoemission Electron Microscopy. In: Physical Review Letters. 2010, 104, 067201. Available under: doi: 10.1103/PhysRevLett.104.067201BibTex
@article{Rhensius2010Imagi-9129,
year={2010},
doi={10.1103/PhysRevLett.104.067201},
title={Imaging of Domain Wall Inertia in Permalloy Half-Ring Nanowires by Time-Resolved Photoemission Electron Microscopy},
volume={104},
journal={Physical Review Letters},
author={Rhensius, Jan and Heyne, Lutz and Backes, Dirk and Krzyk, Stephen and Heyderman, Laura Jane and Joly, L. and Nolting, Frithjof and Kläui, Mathias},
note={Article Number: 067201}
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<dcterms:abstract xml:lang="eng">Using photoemission electron microscopy, we image the dynamics of a field pulse excited domain wall in a Permalloy nanowire. We find a delay in the onset of the wall motion with respect to the excitation and an oscillatory relaxation of the domain wall back to its equilibrium position, defined by an external magnetic field. The origin of both of these inertia effects is the transfer of energy between energy reservoirs. By imaging the distribution of the exchange energy in the wall spin structure, we determine these reservoirs, which are the basis of the domain wall mass concept.</dcterms:abstract>
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