Orbital-resolved spin model for thermal magnetization switching in rare-earth-based ferrimagnets
2013 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 88, no 2, 020406- p.Article in journal (Refereed) Published
The switching of rare-earth-based ferrimagnets triggered by thermal excitation is investigated on the basis of an atomistic spin model beyond the rigid-spin approximation, distinguishing magnetic moments due to electrons in d and f orbitals of the rare earth. It is shown that after excitation of the conduction electrons a transient ferromagneticlike state follows from a dissipationless spin dynamics where energy and angular momentum are distributed between the two sublattices. The final relaxation can then lead to a new state with the magnetization switched with respect to the initial state. The time scale of the switching event is to a large extent determined by the exchange interaction between the two sublattices.
Place, publisher, year, edition, pages
2013. Vol. 88, no 2, 020406- p.
IdentifiersURN: urn:nbn:se:uu:diva-206585DOI: 10.1103/PhysRevB.88.020406ISI: 000322215700001OAI: oai:DiVA.org:uu-206585DiVA: diva2:644802