Transmission through correlated CunCoCun heterostructures

Chioncel, L. and Morari, C. and Östlin, A. and Appelt, W. H. and Droghetti, A. and Vitos, Levente (2015) Transmission through correlated CunCoCun heterostructures. PHYSICAL REVIEW B, 92 (5). ISSN 2469-9950

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Abstract

The effects of local electronic interactions and finite temperatures upon the transmission across the Cu4CoCu4 metallic heterostructure are studied in a combined density functional and dynamical mean field theory. It is shown that, as the electronic correlations are taken into account via a local but dynamic self-energy, the total transmission at the Fermi level gets reduced (predominantly in the minority spin channel), whereby the spin polarization of the transmission increases. The latter is due to a more significant d-electrons contribution, as compared to the non-correlated case in which the transport is dominated by s and p electrons.

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