Growth-sequence-dependent interface magnetism of SrIrO3–La0.7Sr0.3MnO3 bilayers
Source abstract
Abstract
Bilayers of the oxide 3d ferromagnet La0.7Sr0.3MnO3 (LSMO) and the 5d paramagnet SrIrO3 (SIO) with large spin–orbit coupling (SOC) have been investigated regarding the impact of interfacial SOC on magnetic order. For the growth sequence of LSMO on SIO, ferromagnetism is strongly altered and large out-of-plane-canted anisotropy associated with lacking magnetic saturation up to 4 T has been observed. Thin bilayer films have been grown coherently in both growth sequences on SrTiO3 (001) by pulsed laser deposition and structurally characterized by scanning transmission electron microscopy and x-ray diffraction. Measurements of magnetization and field-dependent Mn L2,3 edge x-ray magnetic circular dichroism reveal changes of the LSMO magnetic order, which are strong in LSMO on SIO and weak in LSMO underneath SIO. We attribute the impact of the growth sequence to the interfacial lattice structure, which is known to influence the interfacial magnetic coupling governed by MnO6 octahedral rotations and/or distortions.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Physics, Martin Luther University Halle-Wittenberg 1 , 06099 Halle, Germany
ALBA Synchrotron Light Source 2 , E-08290 Cerdanyola del Vallès, Barcelona, Spain
Max Planck Institute for Chemical Physics of Solids 3 , Nöthnitzer Strasse 40, 01187 Dresden, Germany
European Synchrotron Radiation Facility 4 , Boîte Postale 220, 38043 Grenoble Cedex, France
Semiconductor Physics Research Center (SPRC), Chonbuk National University 5 , 567 Baekje-daero, Jeonju, South Korea
Division of Analytical Research, Korea Basic Science Institute 6 , Seoul 136-713, South Korea
Laboratory for Electroceramic Thin Films, Swiss Federal Institute of Technology–EPFL 7 , Lausanne 1015, Switzerland
Funding
Deutsche Forschungsgemeinschaft
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