SFB 762:  Functionality of Oxide Interfaces

The Collaborative Research Centre focuses on the fabrication and characterization of oxide hetero¬structures whose individual components are ferroelectric, magnetic, semiconducting, or insulating, thereby providing various degrees of freedom for designing functional elements. The investigated materials and structures are multifunctional, which means that based on the ferroelectric or magnetic state the electrical or optical prop-erties are changed and determine the corresponding functionality. The core of the functionality is the inter-face and the coupling across the interface; more precisely, the interfaces geometric structure as well as its charge and spin order can be affected by external electric or magnetic fields, causing by this means the functional effects. The couplings are of various kinds, for example electro-optical, electric, piezoelectric, magneto-elastic or magnetoelectric.The focus of our activities is the investigation of multiferroic interfaces between ferroelectric and magnetic layers. Building on our previous studies, two new aspects arise: first, investigations of two-dimensional oxide quasi-crystals and, second, investigations of metallization of the interface between two insulating oxides.In the long term, the intended investigations shall yield new insights into microscopic interactions at oxide interfaces. Furthermore, the synthesis of oxide heterostructures will demonstrate prototypically the function-ality of interfaces with enormous relevance to applications and high potential for innovation with regard to new concepts in sensor and information technologies.

DFG Programme Collaborative Research Centres

• A01 - Nanoscale multiferroic heterostructures (Project Heads Alexe, Marin ;  Hesse, Dietrich )
• A02 - Magnetoelectric effect in wurtzite-perovskite-spinel heterostructures grown by laser-MBE (Project Head Lorenz, Michael )
• A03 - Atomic structure and local spectroscopy of complex oxidic structures (Project Head Widdra, Wolf )
• A04 - Electronic Ground State and Excited State Properties of complex oxidic Structures (Project Heads Ernst, Arthur ;  Hergert, Wolfram )
• A05 - Growth, structure and magnetic properties of ultra thin transition metal oxides on metals (Project Heads Kirschner, Jürgen ;  Meyerheim, Holger L. )
• A06 - Ferromagnetische und ferroelektrische Eigenschaften von Oxidoberflächen (Project Heads Berlich, Andrea ;  Morgner, Harald )
• A07 - Electronic, geometric, and magnetic properties of multiferroic heterostructures (Project Heads Chassé, Angelika ;  Denecke, Reinhard ;  Schindler, Karl-Michael )
• A08 - Multiferroic 0-3, 2-2, and 1-3 composites (Project Heads Dörr, Kathrin ;  Ebbinghaus, Stefan ;  Hesse, Dietrich )
• A09 - Elastic control of magnetic order at oxide interfaces (Project Head Dörr, Kathrin )
• A10 - Finite size effects in atomically thin REO3 single crystalline films (Project Head Parkin, Stuart )
• A11 - Predicting the atomic structure of oxide interfaces (Project Head Marques, Miguel )
• A12 - Synthesis and characterization of self-assembled oxide vertical interfaces (Project Head Bhatnagar, Ph.D., Akash )
• B01 - Defect-induced magnetism in oxides (Project Heads Esquinazi, Pablo David ;  Hergert, Wolfram )
• B02 - Magnetoelectric coupling in multiferroic heterostructures (Project Heads Henk, Jürgen ;  Mertig, Ingrid )
• B03 - Magneto-electro-optical Interaction and their dynamics of oxide heterostructures (Project Head Schmidt-Grund, Rüdiger )
• B04 - Lateral Transport in Oxidic Field-effect-Structures (Project Heads Grundmann, Marius ;  von Wenckstern, Holger )
• B05 - Magnetic and electric properties of ultrathin oxide films (Project Heads Esquinazi, Pablo David ;  Ziese, Michael )
• B06 - Spin-dependent tunneling in oxidic heterostructures (Project Heads Grundmann, Marius ;  Mertig, Ingrid ;  Rosenow, Bernd )
• B07 - Mapping of short range correlations at oxide surfaces and interfaces (Project Heads Berakdar, Jamal ;  Kirschner, Jürgen ;  Pavlyukh, Yaroslav ;  Schumann, Frank Oliver )
• B08 - Strain, stress and lattice dynamics of multiferroic systems (Project Heads Sander, Dirk ;  Stepanyuk, Valeri ;  Widdra, Wolf )
• B09 - Spin pumping and tunnelling in ferromagnetic oxide hybrid and heterostructures (Project Head Schmidt, Georg )
• B10 - Optimal control of the multiferroic Quantum dynamics in oxide nanostructures (Project Heads Berakdar, Jamal ;  Gross, Eberhard K. U. )
• B11 - Dynamics of multiferroic coupling at oxide interfaces (Project Heads Alexe, Marin ;  Berakdar, Jamal ;  Schmidt, Georg ;  Woltersdorf, Georg )
• B12 - Engineered chiral spin textures and their dynamics in oxide thin films (Project Heads Gross, Eberhard K. U. ;  Mertig, Ingrid ;  Parkin, Stuart ;  Sharma, Ph.D., Sangeeta )
• Z - Central Tasks (Project Head Mertig, Ingrid )

Applicant Institution Martin-Luther-Universität Halle-Wittenberg

Participating University Universität Leipzig

Participating Institution Max-Planck-Institut für Mikrostrukturphysik

Spokesperson Professorin Dr. Ingrid Mertig