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MA: Fachverband Magnetismus
MA 11: Magnetic Thin Films I
MA 11.7: Vortrag
Montag, 7. März 2016, 16:45–17:00, H33
Interface effects in La1/3Sr2/3FeO3/La2/3Sr1/3MnO3 heterostructures — •Markus Waschk1, Markus Schmitz1, Alexander Weber2, and Thomas Brückel1 — 1Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany — 2Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum MLZ, Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85747 Garching, Germany
Transition metal oxides (TMO) show functionalities which make them promising candidates for sensors or devices in future information technologies, because of electronic correlations and/or ordering phenomena. Such devices will consist of heterostructures of different TMO’s, where interfaces play a crucial role. Due to the sensitivity of TMO’s to external parameters such as strain, and electronic doping, magnetic and electric fields, their properties are easily altered at the interface.
We have chosen the system LSFO/LSMO on SrTiO3 as a model system to study interfaces effects systematically. LSFO is an antiferromagnet, which shows a Verwey transition at the Neél and charge ordering temperature TV=TN=TCO=200 K. The drastic increase in resistivity with decreasing temperature offers the opportunity to study the influence of the electronic structure of LSFO on the interfacial magnetization of the ferromagnet LSMO.
We will present our oxide molecular beam epitaxy growth process and structural analysis. Particularly with regard to the magnetization profile, polarized neutron reflectometry results will be presented to explain the interface behavior of the system.