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  Electron correlations in Co2Mn1-xFexSi Heusler compounds

Chadov, S., Fecher, G. H., Felser, C., Minar, J., Braun, J., & Ebert, H. (2009). Electron correlations in Co2Mn1-xFexSi Heusler compounds. Journal of Physics D: Applied Physics, 42(8): 084002, pp. 1-6. doi:10.1088/0022-3727/42/8/084002.

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 Urheber:
Chadov, Stanislav1, Autor
Fecher, Gerhard H.1, Autor
Felser, Claudia2, Autor           
Minar, Jan1, Autor
Braun, Juergen1, Autor
Ebert, Hubert1, Autor
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Zusammenfassung: This study presents the effect of local electronic correlations on the Heusler compounds Co2Mn1-xFex Si as a function of the concentration x. The analysis has been performed by means of first-principles band-structure calculations based on the local approximation to spin-density functional theory (LSDA). Correlation effects are treated in terms of the dynamical mean-field theory and the LSDA + U approach. The formalism is implemented within the Korringa-Kohn-Rostoker Green's function method. In good agreement with the available experimental data the magnetic and spectroscopic properties of the compound are explained in terms of strong electronic correlations. In addition, the correlation effects have been analysed separately with respect to their static or dynamical origin. To achieve a quantitative description of the electronic structure of Co2Mn1-xFex Si Si both static and dynamic correlations must be treated on an equal footing.

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 Datum: 2009-04-21
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: ISI: 000265248300007
DOI: 10.1088/0022-3727/42/8/084002
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Titel: Journal of Physics D: Applied Physics
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Bristol, UK : IOP Publishing Ltd.
Seiten: - Band / Heft: 42 (8) Artikelnummer: 084002 Start- / Endseite: 1 - 6 Identifikator: ISSN: 0022-3727
CoNE: https://pure.mpg.de/cone/journals/resource/0022-3727