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arXiv · 1504.06588

Transmission through correlated Cu$_n$CoCu$_n$ heterostructures

L. Chioncel·C. Morari·A. Östlin·W. H. Appelt·A. Droghetti·M. M. Radonjić·I. Rungger·L. Vitos·U. Eckern·A. V. Postnikov
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Abstract

The effects of local electronic interactions and finite temperatures upon the transmission across the Cu$_4$CoCu$_4$ 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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L. Chioncel, C. Morari, A. Östlin, W. H. Appelt, A. Droghetti, M. M. Radonjić, I. Rungger, L. Vitos, U. Eckern, A. V. Postnikov. 2015-04-24. Transmission through correlated Cu$_n$CoCu$_n$ heterostructures. https://doi.org/10.1103/physrevb.92.054431

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