B10: Optimal control of multiferroic quantum dynamics in oxide nano structures
It is the aim of this theoretical project to develop and apply a theory for the control of the spin-dependent, laser-induced electron dynamics in nano structured oxides with multiferroic properties. We approach the problem using model Hamiltonians with parameters determined from ab-initio calculations. The results will serve for the analysis of the full-fledge ab-initio calculations based on time-dependent density functional theory combined with optimal control algorithms. As physical quantities we will calculated and optimize the spin-dependent tunnelling current in multiferroic tunnel junctions by tuning and identifying the appropriate parameters of the driving fields using optima control theory. As tunnlling barriers we will investigate layered structures with spiral spin order coupled to the ferroelectric order, as encountered for example in RMnO3 with R=Tb, Dy, Gd, and Eu1-xYx. We will also devote efforts for the study of the transport and the optical properties of the two-dimensional electron gas formed at the interface of oxide layers and study laser-induced transient dynamics.
Principal Investigators
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Prof. Dr. Eberhard K. U. Gross ⇒
phone: +49 (0) 345/55 82763 fax: +49 (0) 345/55 11223 |
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Prof. Dr. Jamal Berakdar ⇒
jamal.berakdar@physik.uni-halle.de phone: +49 (0) 345/55 28530 fax: +49 (0) 345/55 27391 |
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