English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Nature of the magnetism of iridium in the double perovskite Sr2CoIrO6

MPS-Authors
/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/persons186103

Zhao,  L.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126525

Auffermann,  G.
Gudrun Auffermann, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons240416

Völzke,  A.
Inorganic Chemistry, 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;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Agrestini, S., Chen, K., Kuo, C.-Y., Zhao, L., Lin, H.-J., Chen, C.-T., et al. (2019). Nature of the magnetism of iridium in the double perovskite Sr2CoIrO6. Physical Review B, 100(1): 014443, pp. 1-9. doi:10.1103/PhysRevB.100.014443.


Cite as: http://hdl.handle.net/21.11116/0000-0004-753A-8
Abstract
We report on our investigation on the magnetism of the iridate double perovskite Sr2CoIrO6, a nominally Ir5+ Van Vleck J(eff) = 0 system. Using x-ray absorption (XAS) and x-ray magnetic circular dichroism (XMCD) spectroscopy at the Ir-L-2,L-3 edges, we found a nearly zero orbital contribution to the magnetic moment and thus an apparent breakdown of the J(eff) = 0 ground state. By carrying out also XAS and XMCD experiments at the Co-L-2,L-3 edges and by performing detailed full atomic multiplet calculations to simulate all spectra, we discovered that the compound consists of about 90% Ir5+ (J(eff) = 0) and Co3+ (S = 2) and 10% Ir6+ (S = 3/2) and Co2+ (S = 3/2). The magnetic signal of this minority Ir6+ component is almost equally as strong as that of the main Ir5+ component. We infer that there is a competition between the Ir5+-Co3+ and the Ir6+-Co2+ configurations in this stoichiometric compound.