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- Title
Laser-induced magnetisation dynamics in La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>/SrRuO<sub>3</sub> superlattices.
- Authors
Razdolski, Ilya; Subkhangulov, Ruslan R.; Gheorghe, Diana G.; Bern, Francis; Vrejoiu, Ionela; Kimel, Alexey V.; Kirilyuk, Andrei; Ziese, Michael; Rasing, Theo
- Abstract
Laser-induced magnetisation dynamics of a La0.7Sr0.3MnO3/SrRuO3 superlattice is studied by means of a single-colour optical pump-probe technique. Significant differences in the magnetisation dynamics of a superlattice with respect to the single layers of constituent materials are demonstrated. Below the Curie temperature TC of SrRuO3, laser-induced ultrafast demagnetisation is found to be followed by a uniform precession of the magnetisation around its new equilibrium. The data is described within a simple model based on a displacive excitation of a precessional magnetisation dynamics. The model is shown to give a good fit to the experimental data. As the initial temperature approaches TC, the oscillations get suppressed and eventually vanish. The magnetisation dynamics is shown to depend on whether the two distinct magnetisation vectors in the superlattice are ferromagnetically or antiferromagnetically aligned. (© 2015 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim)
- Subjects
MAGNETIZATION; SUPERLATTICES; MULTILAYERS; FERROMAGNETIC materials; CURIE temperature
- Publication
Physica Status Solidi - Rapid Research Letters, 2015, Vol 9, Issue 10, p583
- ISSN
1862-6254
- Publication type
Article
- DOI
10.1002/pssr.201510272