Publikation: Role of temperature-dependent spin model parameters in ultra-fast magnetization dynamics
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2017
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European Union (EU): 281043
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FEMTOSPIN - Multiscale Modelling of Femtosecond Spin Dynamics
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Core Facility der Universität Konstanz
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Journal of Physics : Condensed Matter. 2017, 29(31), 314003. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/1361-648X/aa76fc
Zusammenfassung
In the spirit of multiscale modelling magnetization dynamics at elevated temperature is often simulated in terms of a spin model where the model parameters are derived from first principles. While these parameters are mostly assumed temperatureindependent and thermal properties arise from spin fluctuations only, other scenarios are also possible. Choosing bcc Fe as an example, we investigate the influence of different kinds of model assumptions on ultra fast spin dynamics, where following a femtosecond laser pulse, a sample is demagnetized due to a sudden rise of the electron temperature. While different model assumptions do not affect the simulational results qualitatively, their details do depend on the nature of the modelling.
Zusammenfassung in einer weiteren Sprache
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530 Physik
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magnetic interactions, Curie temperature, atomistic spin model, spin dynamics, ultrafast magnetization dynamics
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DEÁK, András, Denise HINZKE, László SZUNYOGH, Ulrich NOWAK, 2017. Role of temperature-dependent spin model parameters in ultra-fast magnetization dynamics. In: Journal of Physics : Condensed Matter. 2017, 29(31), 314003. ISSN 0953-8984. eISSN 1361-648X. Available under: doi: 10.1088/1361-648X/aa76fcBibTex
@article{Deak2017tempe-39854,
year={2017},
doi={10.1088/1361-648X/aa76fc},
title={Role of temperature-dependent spin model parameters in ultra-fast magnetization dynamics},
number={31},
volume={29},
issn={0953-8984},
journal={Journal of Physics : Condensed Matter},
author={Deák, András and Hinzke, Denise and Szunyogh, László and Nowak, Ulrich},
note={Article Number: 314003}
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