The Landau-Lifshitz equation in atomistic models

Ellis, M. O.A.; Evans, R. F.L.; Ostler, T. A.; Barker, J.; Atxitia, U.; Chubykalo-Fesenko, O.; Chantrell, R. W.

Abstract

The Landau-Lifshitz (LL) equation, originally proposed at the macrospin level, is increasingly used in Atomistic Spin Dynamic (ASD) models. These models are based on a spin Hamiltonian featuring atomic spins of fixed length, with the exchange introduced using the Heisenberg formalism. ASD models are proving a powerful approach to the fundamental understanding of ultrafast magnetization dynamics, including the prediction of the thermally induced magnetization switching phenomenon in which the magnetization is reversed using an ultra-fast laser pulse in the absence of an externally applied field. This paper outlines the ASD model approach and considers the role and limitations of the LL equation in this context.

Citation

Ellis, M. O., Evans, R. F., Ostler, T. A., Barker, J., Atxitia, U., Chubykalo-Fesenko, O., & Chantrell, R. W. (2015). The Landau-Lifshitz equation in atomistic models. Low Temperature Physics, 41(9), 705-712. https://doi.org/10.1063/1.4930971

• Journal Article Type: Article
• Acceptance Date: Jul 8, 2015
• Online Publication Date: Sep 30, 2015
• Publication Date: 2015-09
• Deposit Date: Jun 15, 2022
• Journal: Low Temperature Physics
• Print ISSN: 1063-777X
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 41
• Issue: 9
• Pages: 705-712
• DOI: https://doi.org/10.1063/1.4930971
• Public URL: https://hull-repository.worktribe.com/output/4014629