Direct correlation of Cr 3d orbital polarization and O K-edge X-ray magnetic circular dichroism of epitaxial CrO2 films

E. Goering; A. Bayer; S. Gold; G. Schütz; M. Rabe; U. Rüdiger; G. Güntherodt

doi:10.1209/epl/i2002-00103-6

Direct correlation of Cr 3d orbital polarization and O K-edge X-ray magnetic circular dichroism of epitaxial CrO₂ films

E. Goering, A. Bayer, S. Gold, G. Schütz, M. Rabe, U. Rüdiger, G. Güntherodt

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20 Scopus citations

Abstract

The role of delocalization and hybridization in complex magnetic oxides has been investigated by magnetic oxygen K-edge absorption of circular polarized soft X-rays in epitaxial grown CrO₂ as a function of the azimuthal angle at grazing incidence. Unusual strong variations in the typically small X-ray magnetic circular dichroism (XMCD) signal have been observed. Those angular dependencies of the typical CrO₂ oxygen K-edge XMCD signal could be quantitatively interpreted in terms of an induced anisotropic Cr 3d orbital magnetism for different spectral regions of the unoccupied density of states. The results strongly suggest a delocalized non-ionic magnetic behavior of the conduction electrons.

Original language	English
Pages (from-to)	906-911
Number of pages	6
Journal	Europhysics Letters
Volume	58
Issue number	6
DOIs	https://doi.org/10.1209/epl/i2002-00103-6
State	Published - 2002
Externally published	Yes

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title = "Direct correlation of Cr 3d orbital polarization and O K-edge X-ray magnetic circular dichroism of epitaxial CrO2 films",

abstract = "The role of delocalization and hybridization in complex magnetic oxides has been investigated by magnetic oxygen K-edge absorption of circular polarized soft X-rays in epitaxial grown CrO2 as a function of the azimuthal angle at grazing incidence. Unusual strong variations in the typically small X-ray magnetic circular dichroism (XMCD) signal have been observed. Those angular dependencies of the typical CrO2 oxygen K-edge XMCD signal could be quantitatively interpreted in terms of an induced anisotropic Cr 3d orbital magnetism for different spectral regions of the unoccupied density of states. The results strongly suggest a delocalized non-ionic magnetic behavior of the conduction electrons.",

author = "E. Goering and A. Bayer and S. Gold and G. Sch{\"u}tz and M. Rabe and U. R{\"u}diger and G. G{\"u}ntherodt",

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doi = "10.1209/epl/i2002-00103-6",

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T1 - Direct correlation of Cr 3d orbital polarization and O K-edge X-ray magnetic circular dichroism of epitaxial CrO2 films

AU - Goering, E.

AU - Bayer, A.

AU - Gold, S.

AU - Schütz, G.

AU - Rabe, M.

AU - Rüdiger, U.

AU - Güntherodt, G.

PY - 2002

Y1 - 2002

N2 - The role of delocalization and hybridization in complex magnetic oxides has been investigated by magnetic oxygen K-edge absorption of circular polarized soft X-rays in epitaxial grown CrO2 as a function of the azimuthal angle at grazing incidence. Unusual strong variations in the typically small X-ray magnetic circular dichroism (XMCD) signal have been observed. Those angular dependencies of the typical CrO2 oxygen K-edge XMCD signal could be quantitatively interpreted in terms of an induced anisotropic Cr 3d orbital magnetism for different spectral regions of the unoccupied density of states. The results strongly suggest a delocalized non-ionic magnetic behavior of the conduction electrons.

AB - The role of delocalization and hybridization in complex magnetic oxides has been investigated by magnetic oxygen K-edge absorption of circular polarized soft X-rays in epitaxial grown CrO2 as a function of the azimuthal angle at grazing incidence. Unusual strong variations in the typically small X-ray magnetic circular dichroism (XMCD) signal have been observed. Those angular dependencies of the typical CrO2 oxygen K-edge XMCD signal could be quantitatively interpreted in terms of an induced anisotropic Cr 3d orbital magnetism for different spectral regions of the unoccupied density of states. The results strongly suggest a delocalized non-ionic magnetic behavior of the conduction electrons.

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AN - SCOPUS:0037062368

SN - 0295-5075

VL - 58

SP - 906

EP - 911

JO - Europhysics Letters

JF - Europhysics Letters

IS - 6

ER -

Direct correlation of Cr 3d orbital polarization and O K-edge X-ray magnetic circular dichroism of epitaxial CrO₂ films

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