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|a 10.1002/adma.202205698
|2 doi
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|a pubmed24n1160.xml
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|a (DE-627)NLM348152043
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|a (NLM)36300806
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|a DE-627
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|a eng
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|a Janas, David Maximilian
|e verfasserin
|4 aut
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|a Enhancing Electron Correlation at a 3d Ferromagnetic Surface
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 20.01.2023
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|a Date Revised 20.01.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a 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
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|a Journal Article
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|a Stoner model
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|a electron correlation
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|a many-particle effects
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|a spin filtering
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|a Droghetti, Andrea
|e verfasserin
|4 aut
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|a Ponzoni, Stefano
|e verfasserin
|4 aut
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|a Cojocariu, Iulia
|e verfasserin
|4 aut
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|a Jugovac, Matteo
|e verfasserin
|4 aut
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|a Feyer, Vitaliy
|e verfasserin
|4 aut
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|a Radonjić, Miloš M
|e verfasserin
|4 aut
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|a Rungger, Ivan
|e verfasserin
|4 aut
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|a Chioncel, Liviu
|e verfasserin
|4 aut
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|a Zamborlini, Giovanni
|e verfasserin
|4 aut
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|a Cinchetti, Mirko
|e verfasserin
|4 aut
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 3 vom: 27. Jan., Seite e2205698
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:3
|g day:27
|g month:01
|g pages:e2205698
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|u http://dx.doi.org/10.1002/adma.202205698
|3 Volltext
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