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Spin-caloric Transport Properties of Cobalt Nanostructures: Spin Disorder Effects from First Principles by Kováčik, Roman; Mavropoulos, Phivos; Wortmann, Daniel; Blügel, Stefan is a scholarly article available to read on EtoBox.

What is Spin-caloric Transport Properties of Cobalt Nanostructures: Spin Disorder Effects from First Principles about?

The fundamental aspects of spin-dependent transport processes and their interplay with temperature gradients, as given by the spin Seebeck coefficient, are still largely unexplored and a multitude of contributing factors must be considered. We used density functional theory together with a Monte-Carlo-based statistical method to simulate simple nanostructures, such as Co nanowires and films embedded in a Cu host or in vacuum, and investigated the influence of spin-disorder scattering on electron transport at elevated temperatures. While we show that the spin-dependent scattering of electrons due to temperature induced disorder of the local magnetic moments contributes significantly to the resistance, thermoelectric and spin-caloric transport coefficients, we also conclude that the actual magnitude of these effects cannot be predicted, quantitatively or qualitatively, without such detailed calculations.

Author

Kováčik, Roman; Mavropoulos, Phivos; Wortmann, Daniel; Blügel, Stefan

Published

2014

Language

EN