Dresden 2011 – scientific programme
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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.101: Poster
Wednesday, March 16, 2011, 17:30–21:00, P4
Angle-resolved photoelectron spectroscopy of strained SrRuO3 thin films — •Arndt Quer1, Erik Kröger1, Matthias Kalläne1, Adrian Petraru2, Rohit Soni2, Hermann Kohlstedt2, Lutz Kipp1, and Kai Rossnagel1 — 1Institute of Experimental and Applied Physics, University of Kiel, 24098 Kiel, Germany — 2Department of Nanoelectronics, Technical Faculty, University of Kiel, 24143 Kiel, Germany
The magnetoelectric effect in composites based on oxides and in particular the coupling mechanism between the electric and magnetic order parameters have recently attracted much attention in basic research. By combining different piezoelectric and magnetostrictive substances it is possible to optimize the magnetoelectric properties of the composite, for example, with regard to technological applications such as ultra-sensitive magnetic sensors. Due to its adequate electrical conductivity in combination with lattice-strain induced changes of the magnetic moment, ferromagnetic SrRuO3 is a good test candidate for the magnetostrictive component of the magnetoelectric composite. Our goal here was to study the magnetostrictive behavior by analyzing the electronic structure of SrRuO3 thin films in different strain-states. To this end, we prepared pulsed-laser-deposition grown SrRuO3 films on different oxide substrates. The samples were annealed by O2 under various conditions, resulting in atomically clean and mostly defect-free surfaces. The samples were studied by low-energy electron diffraction and angle-resolved photoelectron spectroscopy. This work was supported by the DFG through SFB 855.