Nicolas Gauquelin

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Department of Mechanical and Materials Engineering, the University of Western Ontario, London, Ontario, N6A 5B9, Canada, Institut National de la Recherche Scientifique-Énergie, Matériaux et Télécommunications, Varennes, QC J3X 1S2, Canada, Canadian Centre for Electron Microscopy, McMaster University, Hamilton L8S 4M1, Canada, Brockhouse Institute for(More)
Controlled in-plane rotation of the magnetic easy axis in manganite heterostructures by tailoring the interface oxygen network could allow the development of correlated oxide-based magnetic tunnelling junctions with non-collinear magnetization, with possible practical applications as miniaturized high-switching-speed magnetic random access memory (MRAM)(More)
Two-dimensional electron gases (2DEGs) formed at the interface of insulating complex oxides promise the development of all-oxide electronic devices. These 2DEGs involve many-body interactions that give rise to a variety of physical phenomena such as superconductivity, magnetism, tunable metal-insulator transitions and phase separation. Increasing the(More)
A robust and expedient gas quenching method is developed for the solution deposition of hybrid perovskite thin films. The method offers a reliable standard practice for the fabrication of a non-exhaustive variety of perovskites exhibiting excellent film morphology and commensurate high performance in both regular and inverted structured solar cell(More)
The electronic phase behavior and functionality of interfaces and surfaces in complex materials are strongly correlated to chemical composition profiles, stoichiometry and intermixing. Here a novel analysis scheme for resonant X-ray reflectivity maps is introduced to determine such profiles, which is element specific and non-destructive, and which exhibits(More)
The high-temperature superconductor YBa2Cu3O(6+δ) consists of two main structural units--a bilayer of CuO2 planes that are central to superconductivity and a CuO(2+δ) chain layer. Although the functional role of the planes and chains has long been established, most probes integrate over both, which makes it difficult to distinguish the contribution of each.(More)
Electronic states are responsible for most material properties, including chemical bonds, electrical and thermal conductivity, as well as optical and magnetic properties. Experimentally, however, they remain mostly elusive. Here, we report the real-space mapping of selected transitions between p and d states on the Ångström scale in bulk rutile (TiO2) using(More)
Atomically resolved EELS mapping of the interfacial structure of epitaxially strained LaNiO3/LaAlO3 superlattices N. Gauquelin,1,* E. Benckiser,2,† M. K. Kinyanjui,3 M. Wu,2 Y. Lu,2 G. Christiani,2 G. Logvenov,2 H.-U. Habermeier,2 U. Kaiser,3 B. Keimer,2 and G. A. Botton1,‡ 1Department of Materials Science and Engineering and Canadian Centre For Electron(More)
Experimental details. For TEM investigation, a ~25-50 nm thick LCMO/STO lamella was prepared perpendicular to the zone axis orientation of the SrTiO 3 substrate using focused ion beam milling. The [01 ̅ 1] atomically resolved EDX experiments were performed using an FEI X-Ant-EM microscope at the University of Antwerp, operated at 300 kV which offers a high(More)