Temperature dependence of Gilbert damping in manganite/normal metal heterostructure

Temperature dependence of Gilbert damping in manganite/normal metal heterostructure

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The temperature dependence of the spin-pumping effect on the Gilbert damping in a bilayer based on epitaxial manganite film grown on neodymium Toy Figures galate substrate was investigated by measuring of the linewidth of the ferromagnetic resonance spectrum (FMR).Ferromagnetic resonance in thin ferromagnetic manganite La0.7Sr0.3MnO3 (LSMO) films is used to produce a spin current at the interface between a metallic and a ferromagnetic layer.

Pt/LSMO/NGO, Au/LSMO/NGO and Western Work Browband Bridle LSMO/NGO heterostrucutres were measured.An increase of the linewidth in FMR spectrum at the temperature lower liquid nitrogen temperature (77K) is observed.