The Landau-Lifshitz equation in atomistic models

ELLIS, M O A, EVANS, R F L, OSTLER, Thomas, BARKER, J, ATXITIA, U and CHANTRELL, R W (2015). The Landau-Lifshitz equation in atomistic models. Low Temperature Physics, 41 (9), 1-9.

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Official URL: http://aip.scitation.org/doi/10.1063/1.4930971
Link to published version:: 10.1063/1.4930971

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.

Item Type: Article
Uncontrolled Keywords: atomistic spin models,landau,lifshitz equation
Departments: Arts, Computing, Engineering and Sciences > Engineering and Mathematics
Identification Number: 10.1063/1.4930971
Depositing User: Thomas Ostler
Date Deposited: 31 Mar 2017 09:08
Last Modified: 31 Mar 2017 09:15
URI: http://shura.shu.ac.uk/id/eprint/15277

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