| 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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Christensen, Dennis Valbjørn
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Perspectives on oxide heterostructures – the curious case of γ-Al 2 O 3 /SrTiO 3citations
- 2023Reconstruction of Low Dimensional Electronic States by Altering the Chemical Arrangement at the SrTiO3 Surfacecitations
- 2023Perspectives on oxide heterostructures – the curious case of γ-Al2O3/SrTiO3citations
- 2022On the thermoelectric properties of Nb-doped SrTiO 3 epitaxial thin filmscitations
- 2022Freestanding Perovskite Oxide Filmscitations
- 2019Electrical, magnetic and magnetotransport properties of Na and Mo doped Ca3Co4O9 materialscitations
- 2019Electrical, magnetic and magnetotransport properties of Na and Mo doped Ca 3 Co 4 O 9 materialscitations
- 2019Diluted Oxide Interfaces with Tunable Ground Statescitations
- 2018Exploring magnetic and electronic properties in γ-Al2O3/SrTiO3
- 2018Exploring magnetic and electronic properties in γ-Al 2 O 3 /SrTiO 3
- 2018High-temperature thermoelectric properties of Na- and W-Doped Ca3Co4O9 system citations
- 2017Microscopic origin of the mobility enhancement at a spinel/perovskite oxide heterointerface revealed by photoemission spectroscopycitations
- 2016Scandium-doped zinc cadmium oxide as a new stable n-type oxide thermoelectric materialcitations
- 2012On the origin of metallic conductivity at the interface of LaAlO3/SrTiO3citations
- 2012Resistance switching of the interfacial conductance in amorphous SrTiO3 heterostructures
Places of action
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article
Microscopic origin of the mobility enhancement at a spinel/perovskite oxide heterointerface revealed by photoemission spectroscopy
Abstract
The spinel/perovskite heterointerface γ−Al2O3/SrTiO3 hosts a two-dimensional electron system (2DES) with electron mobilities exceeding those in its all-perovskite counterpart LaAlO3/SrTiO3by more than an order of magnitude, despite the abundance of oxygenvacancies which act as electron donors as well as scattering sites. Bymeans of resonant soft x-ray photoemission spectroscopy and <i>ab initio</i>calculations, we reveal the presence of a sharply localized type ofoxygen vacancies at the very interface due to the local breaking of theperovskite symmetry. We explain the extraordinarily high mobilities byreduced scattering resulting from the preferential formation ofinterfacial oxygen vacancies and spatial separation of the resulting2DES in deeper SrTiO3layers. Our findings comply with transport studies and pave the waytowards defect engineering at interfaces of oxides with differentcrystal structures.