DataVXAdvanced Functional MaterialsPaper
journal article·2017-05Open access

Thickness Dependent Properties in Oxide Heterostructures Driven by Structurally Induced Metal–Oxygen Hybridization Variations

Zhaoliang Liao, Nicolas Gauquelin, Robert J. Green, Sebastian Macke, Julie Gonnissen, Sean Thomas, Zhicheng Zhong, Lin Li, Liang Si, Sandra Van Aert, Philipp Hansmann, Karsten Held, Jing Xia, Johan Verbeeck, Gustaaf Van Tendeloo, George A. Sawatzky, Gertjan Koster, Mark Huijben, Guus Rijnders

Advanced Functional Materials· Volume 27· Issue 17
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Source abstract

Abstract

Thickness‐driven electronic phase transitions are broadly observed in different types of functional perovskite heterostructures. However, uncertainty remains whether these effects are solely due to spatial confinement, broken symmetry, or rather to a change of structure with varying film thickness. Here, this study presents direct evidence for the relaxation of oxygen‐2p and Mn‐3d orbital (p–d) hybridization coupled to the layer‐dependent octahedral tilts within a La2/3Sr1/3MnO3 film driven by interfacial octahedral coupling. An enhanced Curie temperature is achieved by reducing the octahedral tilting via interface structure engineering. Atomically resolved lattice, electronic, and magnetic structures together with X‐ray absorption spectroscopy demonstrate the central role of thickness‐dependent p–d hybridization in the widely observed dimensionality effects present in correlated oxide heterostructures.
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Research context

Electronic materials

OpenAlex topics: Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials · Advanced Condensed Matter Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MESA+ Institute for Nanotechnology University of Twente 7500 AE Enschede The Netherlands

Electron Microscopy for Materials Science (EMAT) University of Antwerp 2020 Antwerp Belgium

Quantum Matter Institute and Department of Physics and Astronomy University of British Columbia 2355 East Mall Vancouver V6T 1Z4 Canada

Max Planck Institute for Chemical Physics of Solids Nöthnitzerstraße 40 01187 Dresden Germany

Max Planck Institute for Solid State Research Heisenbergstraße 1 70569 Stuttgart Germany

Department of Physics and Astronomy University of California, Irvine Irvine CA 92697 USA

Institute of Solid State Physics TU WIEN A‐1040 Vienna Austria

Funding

Fonds Wetenschappelijk Onderzoek · European Research Council · Natural Sciences and Engineering Research Council of Canada · National Research Council Canada · Canadian Institutes of Health Research · Western Economic Diversification Canada · University of Saskatchewan

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