Temperature dependence of the frequencies and effective damping parameters of ferrimagnetic resonance

Schlickeiser, Frank; Atxitia, Unai; Wienholdt, Sönke; Hinzke, Denise; Chubykalo-Fesenko, Oksana; Nowak, Ulrich

Temperature dependence of the frequencies and effective damping parameters of ferrimagnetic resonance

Dateien

Schlickeiser_211980.pdfGröße: 736.37 KBDownloads: 420

Datum

2012

Autor:innen

Chubykalo-Fesenko, Oksana

Nowak, Ulrich

Angaben zur Forschungsförderung

European Union (EU): 281043

Projekt

FEMTOSPIN - Multiscale Modelling of Femtosecond Spin Dynamics

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. 2012, 86(21). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.86.214416

Zusammenfassung

Recent experiments on all-optical switching in GdFeCo and CoGd have raised the question about the importance of the angular momentum or the magnetization compensation point for ultrafast magnetization dynamics. We investigate the dynamics of ferrimagnets by means of computer simulations as well as analytically. The results from atomistic modeling are explained by a theory based on the two-sublattice Landau-Lifshitz-Bloch equation. Similarly to the experimental results and unlike predictions based on the macroscopic Landau-Lifshitz equation, we find an increase in the effective damping at temperatures approaching the Curie temperature. Further results for the temperature dependence of the frequencies and effective damping parameters of the normal modes represent an improvement of former approximated solutions, building a better basis for comparison to recent experiments.

Fachgebiet (DDC)

530 Physik

Schlagwörter

temperature dependence, frequencies, damping parameters, ferrimagnetic resonance

Zitieren

ISO 690

SCHLICKEISER, Frank, Unai ATXITIA, Sönke WIENHOLDT, Denise HINZKE, Oksana CHUBYKALO-FESENKO, Ulrich NOWAK, 2012. Temperature dependence of the frequencies and effective damping parameters of ferrimagnetic resonance. In: Physical Review B. 2012, 86(21). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.86.214416

BibTex

@article{Schlickeiser2012Tempe-21198,
  year={2012},
  doi={10.1103/PhysRevB.86.214416},
  title={Temperature dependence of the frequencies and effective damping parameters of ferrimagnetic resonance},
  number={21},
  volume={86},
  issn={1098-0121},
  journal={Physical Review B},
  author={Schlickeiser, Frank and Atxitia, Unai and Wienholdt, Sönke and Hinzke, Denise and Chubykalo-Fesenko, Oksana and Nowak, Ulrich}
}

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Universitätsbibliographie

Ja