Thermally activated magnetization reversal in classical spin chains

Hinzke, Denise; Nowak, Ulrich; Usadel, Klaus-Dieter

Thermally activated magnetization reversal in classical spin chains

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2000

Autor:innen

Hinzke, Denise

Nowak, Ulrich

Usadel, Klaus-Dieter

Publikationstyp

Beitrag zu einem Konferenzband

Publikationsstatus

Published

Erschienen in

Structure and Dynamics of Heterogeneous Systems - From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers. Singapore: World Scientific Publishing Co. Pte. Ltd., 2000, pp. 331-337. ISBN 978-981-02-4251-0. Available under: doi: 10.1142/9789812793652_0031

Zusammenfassung

We investigate the thermally activated magnetization switching in a classical Heisenberg spin chain driven by an external magnetic field. For small system sizes we expect that the magnetic moments rotate coherently, while in the case of larger system sizes the magnetization reversal is proposed to be due to soliton-antisoliton nucleation. We compare Monte Carlo simulations with the direct integration of the Landau-Lifshitz-Gilbert equation of motion with Langevin dynamics as well as with asymptotic solutions for the escape rates following from the Fokker-Planck equation, finding agreement for low temperatures and high damping. We also discuss deviations in the intermediate temperature regime.

Fachgebiet (DDC)

530 Physik

Konferenz

Structure and Dynamics of Heterogeneous Systems - From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers, 24. Feb. 1999 - 26. Feb. 1999, Duisburg, Germany

Zitieren

ISO 690

HINZKE, Denise, Ulrich NOWAK, Klaus-Dieter USADEL, 2000. Thermally activated magnetization reversal in classical spin chains. Structure and Dynamics of Heterogeneous Systems - From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers. Duisburg, Germany, 24. Feb. 1999 - 26. Feb. 1999. In: Structure and Dynamics of Heterogeneous Systems - From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers. Singapore: World Scientific Publishing Co. Pte. Ltd., 2000, pp. 331-337. ISBN 978-981-02-4251-0. Available under: doi: 10.1142/9789812793652_0031

BibTex

@inproceedings{Hinzke2000Therm-956,
  year={2000},
  doi={10.1142/9789812793652_0031},
  title={Thermally activated magnetization reversal in classical spin chains},
  isbn={978-981-02-4251-0},
  publisher={World Scientific Publishing Co. Pte. Ltd.},
  address={Singapore},
  booktitle={Structure and Dynamics of Heterogeneous Systems - From Atoms, Molecules and Clusters in Complex Environment to Thin Films and Multilayers},
  pages={331--337},
  author={Hinzke, Denise and Nowak, Ulrich and Usadel, Klaus-Dieter}
}

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