Magnetization Dynamics and Electron Transport in the La0.7Sr0.3MnO3/Y3Fe5O12 Hybrid Structures

Nikita V. Volkov; Dmitry A. Smolyakov; Mikhail V. Rautskii; Vladimir I. Chichkov; Yakov M. Mukovskii

doi:10.4028/www.scientific.net/SSP.215.368

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HomeSolid State PhenomenaSolid State Phenomena Vol. 215Magnetization Dynamics and Electron Transport in...

Magnetization Dynamics and Electron Transport in the La_0.7Sr_0.3MnO₃/Y₃Fe₅O₁₂Hybrid Structures

Abstract:

We present the results of investigations of the spin-polarized current and spin dynamics in the hybrid structures ferrimagnetic insulator/ferromagnetic metal subjected to microwave radiation. We studied the La_0.7Sr_0.3MnO₃/Y₃Fe₅O₁₂ bilayer films on the Gd₃Ga₅O₁₂ substrate. It was experimentally established that under the action of spin pumping the resistance of the La_0.7Sr_0.3MnO₃ film changes. The value of ΔR is maximum in the sample with a La_0.7Sr_0.3MnO₃ layer thickness of 10 nm and sharply drops as the manganite film thickness is increased. The resistance decreases in the paramagnetic region and grows in the ferromagnetic region at temperatures below the metal-insulator transition point. The variation in the resistance of the manganite film can be attributed to the correlation of the spin dynamics and transport properties of conduction electrons in the structure.

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Solid State Phenomena (Volume 215)

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368-371

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.368

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Online since:

April 2014

Authors:

Nikita V. Volkov, Dmitry A. Smolyakov, Mikhail V. Rautskii*, Vladimir I. Chichkov, Yakov M. Mukovskii

Keywords:

Hybrid Structure, Manganite, Spin Pumping

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