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  Valence state of Sm in single-crystalline EuO thin films

Reisner, A., Kasinathan, D., Wirth, S., Tjeng, L. H., & Altendorf, S. G. (2017). Valence state of Sm in single-crystalline EuO thin films. EPL, 117(4): 47001, pp. 1-6. doi:10.1209/0295-5075/117/47001.

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Reisner, A.1, Autor           
Kasinathan, D.1, Autor           
Wirth, S.2, Autor           
Tjeng, L. H.3, Autor           
Altendorf, S. G.4, Autor           
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              
3Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              
4Simone Altendorf, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863458              

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 Zusammenfassung: Samarium has two stable valence states, 2+ and 3+, which coexist in many compounds forming spatially homogeneous intermediate valence states. We study the valence state of samarium when incorporated in a single crystalline EuO thin film which crystallizes in a fcc structure similar to that of the intermediate valence SmO, but with a larger lattice constant. Due to the increased lattice spacing, a stabilization of the larger Sm2+ ion is expected. Surprisingly, the samarium incorporated in SmxEu1-xO thin films shows a predominantly trivalent character, as determined by x-ray photoelectron spectroscopy and magnetometry measurements. We infer that the O2- ions in the EuO lattice have enough room to move locally, so as to reduce the Sm-O distance and stabilize the Sm3+ valence. Copyright (C) EPLA, 2017

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Sprache(n): eng - English
 Datum: 2017-04-062017-04-06
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000401166400012
DOI: 10.1209/0295-5075/117/47001
 Art des Abschluß: -

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Titel: EPL
  Andere : epl: a letters journal exploring the frontiers of physics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Les-Ulis : EDP Science
Seiten: - Band / Heft: 117 (4) Artikelnummer: 47001 Start- / Endseite: 1 - 6 Identifikator: Anderer: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075