Transmission through correlated CunCoCun heterostructures
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 92, no 5, 054431Article in journal (Refereed) Published
We propose a method to compute the transmission through correlated heterostructures by combining density functional and many-body dynamical mean field theories. The heart of this combination consists in porting the many-body self-energy from an all electron basis into a pseudopotential localized atomic basis set. Using this combination we study the effects of local electronic interactions and finite temperatures on the transmission across the Cu4CoCu4 metallic heterostructure. 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-electron contribution, as compared to the noncorrelated case in which the transport is dominated by s and p electrons.
Place, publisher, year, edition, pages
2015. Vol. 92, no 5, 054431
IdentifiersURN: urn:nbn:se:kth:diva-167143DOI: 10.1103/PhysRevB.92.054431ISI: 000362210600005ScopusID: 2-s2.0-84941085962OAI: oai:DiVA.org:kth-167143DiVA: diva2:813147
FunderEU, FP7, Seventh Framework Programme, 618082Swedish Research Council
QC 20151102. Updated from manuscript to article in journal.2015-05-212015-05-212015-11-25Bibliographically approved