| 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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Jugovac, Matteo
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Giant and Tunable Out-of-Plane Spin Polarization of Topological Antimonenecitations
- 2023Enhancing electron correlation at a 3D ferromagnetic surfacecitations
- 2023Observation of termination-dependent topological connectivity in a magnetic Weyl kagome-latticecitations
- 2023Observation of Termination-Dependent Topological Connectivity in a Magnetic Weyl Kagome Latticecitations
- 2023Observation of termination-dependent topological connectivity in a magnetic Weyl Kagome latticecitations
- 2022All-optical spin injection in silicon investigated by element-specific time-resolved Kerr effectcitations
- 2022Enhancing electron correlation at a 3d ferromagnetic surfacecitations
- 2021Room-temperature on-spin-switching and tuning in a porphyrin-based multifunctional interface
- 2021Room‐Temperature On‐Spin‐Switching and Tuning in a Porphyrin‐Based Multifunctional Interfacecitations
- 2020Operando atomic-scale study of graphene CVD growth at steps of polycrystalline nickelcitations
- 2020Morphology and electronic structure of graphene supported by metallic thin films
- 2019Combined orbital tomography study of multi-configurational molecular adsorbate systemscitations
- 2019Combined orbital tomography study of multi-configurational molecular adsorbate systems
- 2019Topotactic Phase Transition Driving Memristive Behaviorcitations
- 2018Graphene on nickel (100) micrograins: Modulating the interface interaction by extended moiré superstructurescitations
Places of action
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article
Enhancing electron correlation at a 3d ferromagnetic surface
Abstract
Spin-resolved momentum microscopy and theoretical calculations are combined beyond the one-electron approximation to unveil the spin-dependent electronic structure of the interface formed between iron (Fe) and an ordered oxygen (O) atomic layer, and an adsorbate-induced enhancement of electronic correlations is found. It is demonstrated that this enhancement is responsible for a drastic narrowing of the Fe d-bands close to the Fermi energy (EF) and a reduction of the exchange splitting, which is not accounted for in the Stoner picture of ferromagnetism. In addition, correlation leads to a significant spin-dependent broadening of the electronic bands at higher binding energies and their merging with satellite features, which are manifestations of a pure many-electron behavior. Overall, adatom adsorption can be used to vary the material parameters of transition metal surfaces to access different intermediate electronic correlated regimes, which will otherwise not be accessible. The results show that the concepts developed to understand the physics and chemistry of adsorbate–metal interfaces, relevant for a variety of research areas, from spintronics to catalysis, need to be reconsidered with many-particle effects being of utmost importance. These may affect chemisorption energy, spin transport, magnetic order, and even play a key role in the emergence of ferromagnetism at interfaces between non-magnetic systems.