Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 68: Correlated Electrons: (General) Theory 1

TT 68.8: Vortrag

Mittwoch, 18. März 2015, 17:15–17:30, H 3010

Correlated metal - Mott insulator heterostructures: real space dynamical mean-field study — •Karol Makuch and Krzysztof Byczuk — Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland

Motivated by recent experiments on transition metal oxide interfaces we study models of heterostructures with strong electronic correlations. In particular, we investigate a layer of a Mott insulator sandwiched between two semi-infinite correlated metals. The width of a layer varies from one to many lattice constants. The system is described by the Hubbard model on a simple cubic lattice with the position dependent Hubbard interaction. Properties of the system are investigated within the real space dynamical mean-field theory with the continuous time quantum Monte Carlo solver created in our group. Proximity effects and structures of local excitations in different parts of the system are described.