| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Triscone, Jean-Marc
Universidad de Cantabria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructurescitations
- 2023Competition between Carrier Injection and Structural Distortions in Electron-Doped Perovskite Nickelate Thin Filmscitations
- 2022Intrinsic magnetism in superconducting infinite-layer nickelatescitations
- 2021Crossover between distinct symmetries in solid solutions of rare earth nickelatescitations
- 2021Crossover between distinct symmetries in solid solutions of rare earth nickelatescitations
- 2020Full control of polarization in ferroelectric thin films using growth temperature to modulate defectscitations
- 2020Role of point and line defects on the electronic structure of LaAlO3/SrTiO3 interfacescitations
- 2020Vibrational properties of LaNiO3 films in the ultrathin regimecitations
- 2016Positive effect of an internal depolarization field in ultrathin epitaxial ferroelectric filmscitations
- 2016Negative capacitance in multidomain ferroelectric superlatticescitations
- 2011Interface Physics in Complex Oxide Heterostructurescitations
- 2007Monodomain to polydomain transition in ferroelectric PbTiO3 thin films with La0.67Sr0.33MnO3 electrodescitations
Places of action
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article
Role of point and line defects on the electronic structure of LaAlO3/SrTiO3 interfaces
Abstract
Realization of heterostructures containing multiple two-dimensional electron liquids requires a fine control of the fabrication process. Here, we report a structural and spectroscopy study of LaAlO<sub>3</sub>/SrTiO<sub>3</sub>/LaAlO<sub>3</sub> trilayers grown on the SrTiO<sub>3</sub> substrate by pulsed-laser deposition. Scanning transmission electron microscopy with the help of <i>ab initio </i>calculations reveals that antisite defects associated with oxygen vacancies are primarily present in the SrTiO<sub>3</sub> film (STO-f) close to the <i>p</i>-type interface (STO-f/LaAlO<sub>3</sub>), while oxygen vacancies prevail close to the top <i>n</i>-type interface (LaAlO<sub>3</sub>/STO-f). At the same interface, misfit dislocations relax the tensile strain of the top LaAlO<sub>3</sub> layer. Combining x-ray absorption spectroscopy, x-ray linear dichroism, resonant photoemission spectroscopy, and electron energy loss spectroscopy, we observe that the 3<i>d </i>orbital reconstruction at the interface between LaAlO<sub>3</sub> and the SrTiO<sub>3</sub> substrate is confined over a few interfacial Ti planes while, at the top n-type interface (LaAlO<sub>3</sub>/STO-f), the absence of a dichroic signal can be related to the blurring of the interfacial orbital reconstruction due to the heterogeneity of defects.