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Atomistic Spin Dynamic Method with both Damping and Moment of Inertia Effects Included from First Principles
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.
2012 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 108, no 5, 057204- p.Article in journal (Refereed) Published
Abstract [en]

We consider spin dynamics for implementation in an atomistic framework and we address the feasibility of capturing processes in the femtosecond regime by inclusion of moment of inertia. In the spirit of an s-d-like interaction between the magnetization and electron spin, we derive a generalized equation of motion for the magnetization dynamics in the semiclassical limit, which is nonlocal in both space and time. Using this result we retain a generalized Landau-Lifshitz-Gilbert equation, also including the moment of inertia, and demonstrate how the exchange interaction, damping, and moment of inertia, all can be calculated from first principles.

Place, publisher, year, edition, pages
2012. Vol. 108, no 5, 057204- p.
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-169959DOI: 10.1103/PhysRevLett.108.057204ISI: 000299832900019OAI: oai:DiVA.org:uu-169959DiVA: diva2:508419
Available from: 2012-03-08 Created: 2012-03-07 Last updated: 2017-12-07Bibliographically approved

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Bhattacharjee, SatadeepNordström, LarsFransson, Jonas

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