Resumo

VIVAS-CALDERON, Hernán. Diffusive Correlation for Spin Current and Itinerant Electrons in Confined Magnetic Systems. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2016, vol.40, n.154, pp.34-42. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.296.

Spin waves - electron carrier interaction in a magnetic medium is described from the Landau-Lifshitz-Gilbert-Bazaliy (LLGB) approximation, by adapting the diffusion propagator formalism on both infinitely extended and confined systems. The static and thermal correction due to the transverse fluctuations on the magnetic susceptibility are obtained in terms of the carrier density current J_e and the externally applied field H_0Z, providing a critical relationship giving by J_e ~ H^1/2_OZ, which is valid for 1D systems. The spin density distribution response as a function of J_e, as well as its correlation with the spin current (J_S) in steady state, are discussed for different values of the applied field and boundary magnetization phase difference. Average lifetime phase diagram for thermally stimulated spin waves is also calculated. The Gilbert factor rôle on the thermal stability for the spin waves states is also quantitatively analyzed in this scenario.

Palavras-chave : Spin waves; current density; diffusive propagator.

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