Intricacies of the Co3+ spin state in Sr2Co0.5Ir0.5O4: An x-ray absorption and 
magnetic circular dichroism study

Agrestini, S.; Kuo, C.-Y.; Mikhailova, D.; Chen, K.; Ohresser, P.; Pi, T. W.; Guo, H.; Komarek, A. C.; Tanaka, A.; Hu, Z.; Tjeng, L. H.

doi:10.1103/PhysRevB.95.245131

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Intricacies of the Co³⁺ spin state in Sr₂Co_0.5Ir_0.5O4: An x-ray absorption and magnetic circular dichroism study

MPG-Autoren

/persons/resource/persons126507

Agrestini, S.
Stefano Agrestini, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126717

Kuo, C.-Y.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126756

Mikhailova, D.
Daria Mikhailova, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons180435

Guo, H.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126701

Komarek, A. C.
Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126666

Hu, Z.
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126881

Tjeng, L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Externe Ressourcen

Es sind keine externen Ressourcen hinterlegt

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Agrestini, S., Kuo, C.-Y., Mikhailova, D., Chen, K., Ohresser, P., Pi, T. W., et al. (2017). Intricacies of the Co³⁺ spin state in Sr₂Co_0.5Ir_0.5O4: An x-ray absorption and magnetic circular dichroism study. Physical Review B, 95(24): 245131, pp. 1-7. doi:10.1103/PhysRevB.95.245131.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-ADB4-F

Zusammenfassung

We report on a combined soft x-ray absorption and magnetic circular dichroism (XMCD) study at the Co-L-3,L-2 edge on the hybrid 3d/5d solid state oxide Sr2Co0.5Ir0.5O4 with K2NiF4 structure. Our data indicate unambiguously a pure high spin state (S = 2) for the Co3+ (3d(6)) ions with a significant unquenched orbital moment L-z/2S(z) = 0.25 despite the sizable elongation of the CoO6 octahedra. Using quantitative model calculations based on parameters consistent with our spectra, we have investigated the stability of this high spin state with respect to the competing low spin and intermediate spin states.