| Issue |
Europhys. Lett.
Volume 73, Number 2, January 2006
|
|
|---|---|---|
| Page(s) | 285 - 291 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10375-8 | |
| Published online | 02 December 2005 | |
Spin-lattice relaxation phenomena in manganite 
thin films
1
Fachbereich Physik und Forschungsschwerpunkt MINAS Technische Universität Kaiserslautern - Erwin-Schrödinger-Str. 56 67663 Kaiserslautern, Germany
2
I. Physikalisches Institut, Universität Göttingen Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
Corresponding author: mweber@physik.uni-kl.de
Received:
21
July
2005
Accepted:
15
November
2005
Time-resolved magneto-optics was used to study spin-lattice relaxation
dynamics in thin epitaxial films. Two distinct
recovery regimes of the ferromagnetic order can be resolved upon
photoexcitation, which manifest themselves by two different relaxation
times. A pump pulse energy-independent spin-lattice relaxation time can be
deduced. Due to a weak spin-orbit coupling in manganites this spin-lattice
relaxation time is much longer than in ferromagnetic metals. Heat flow into
the substrate sets the ultimate recovery speed of the ferromagnetic order
and allows for a determination of heat diffusion properties of manganite
films.
PACS: 78.47.+p – Time-resolved optical spectroscopies and other ultrafast optical measurements in condensed matter / 75.70.-i – Magnetic properties of thin films, surfaces, and interfaces / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EDP Sciences, 2006
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