Kolchinskaya, A. ; Komissinskiy, P. ; Yazdi, M. Baghaie ; Vafaee, M. ; Mikhailova, D. ; Narayanan, N. ; Ehrenberg, H. ; Wilhelm, F. ; Rogalev, A. ; Alff, L. (2012)
Magnetism and spin-orbit coupling in Ir-based double perovskites La_{2−x}Sr_{x}CoIrO_{6}.
In: Physical Review B, 85 (22)
doi: 10.1103/PhysRevB.85.224422
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We have studied Ir spin and orbital magnetic moments in the double perovskites La2−xSrxCoIrO6 by x-ray magnetic circular dichroism. In La2CoIrO6, Ir4+ couples antiferromagnetically to the weak ferromagnetic moment of the canted Co2+ sublattice and shows an unusually large negative total magnetic moment (−0.38 μB/f.u.) combined with strong spin-orbit interaction. In contrast, in Sr2CoIrO6, Ir5+ has a paramagnetic moment with almost no orbital contribution. A simple kinetic-energy-driven mechanism including spin-orbit coupling explains why Ir is susceptible to the induction of substantial magnetic moments in the double perovskite structure.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2012 |
| Autor(en): | Kolchinskaya, A. ; Komissinskiy, P. ; Yazdi, M. Baghaie ; Vafaee, M. ; Mikhailova, D. ; Narayanan, N. ; Ehrenberg, H. ; Wilhelm, F. ; Rogalev, A. ; Alff, L. |
| Art des Eintrags: | Bibliographie |
| Titel: | Magnetism and spin-orbit coupling in Ir-based double perovskites La_{2−x}Sr_{x}CoIrO_{6} |
| Sprache: | Englisch |
| Publikationsjahr: | 20 Juni 2012 |
| Verlag: | American Physical Society |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 85 |
| (Heft-)Nummer: | 22 |
| DOI: | 10.1103/PhysRevB.85.224422 |
| Kurzbeschreibung (Abstract): | We have studied Ir spin and orbital magnetic moments in the double perovskites La2−xSrxCoIrO6 by x-ray magnetic circular dichroism. In La2CoIrO6, Ir4+ couples antiferromagnetically to the weak ferromagnetic moment of the canted Co2+ sublattice and shows an unusually large negative total magnetic moment (−0.38 μB/f.u.) combined with strong spin-orbit interaction. In contrast, in Sr2CoIrO6, Ir5+ has a paramagnetic moment with almost no orbital contribution. A simple kinetic-energy-driven mechanism including spin-orbit coupling explains why Ir is susceptible to the induction of substantial magnetic moments in the double perovskite structure. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften |
| Hinterlegungsdatum: | 07 Jan 2014 09:47 |
| Letzte Änderung: | 07 Jan 2014 09:47 |
| PPN: | |
| Sponsoren: | This work was supported by the LOEWE-Centre AdRIA, by DFG through Grant No. SPP 1178, and by the European Synchrotron Radiation Facility (Grant Nos. HE-2379, HE- 2848, and HE-3567). |
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