Berlin 2015 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 68: Correlated Electrons: (General) Theory 1
TT 68.11: Vortrag
Mittwoch, 18. März 2015, 18:00–18:15, H 3010
Dynamical electronic correlations in nanostructures — •Angelo Valli1,2, Giorgio Sangiovanni3, Alessandro Toschi2, Massimo Capone1, and Karsten Held2 — 1Democritos National Simulation Center, Consiglio Nazionale delle Ricerche, Istituto Officina dei Materiali (IOM) and Scuola Internazionale Superiore di Studi Avanzati (SISSA), Trieste, Italy — 2Vienna University of Technology, Vienna, Austria — 3Institute for Theoretical Physics and Astrophysics, University of Würzburg, Würzburg, Germany
The understanding and control of strong electronic correlation effects represents one of the most challenging research topic of modern solid state physics. Thanks to the refined ability to manipulate matter down to the nanoscale, we are nowadays able to explore electronic correlations within an artificial experimental environment. Moreover, the intrinsic high tunability of nano- and heterostructures hints at the fascinating possibility to directly control quantum phenomena. The experimental progress call for a deeper understanding of many-body effects on the nanoscale beyond paradigmatic models. To this end, we employ state-of-the art many-body methods within the reference frame of the dynamical mean-field theory and its extensions, in order to describe electronic, magnetic, and transport properties of nanoscopic systems. Among the applications, we explore the role of dynamical electronic correlations in carbon-based systems, ranging from few atoms molecules to graphene nanoflakes.