Many-body effects in magnetic circular dichroism at Ce L2,3 absorption edges in CeFe2

K. Asakura; K. Fukui; H. Ogasawara; I. Harada; J. C. Parlebas; A. Kotani

doi:10.1016/j.physb.2003.11.054

Many-body effects in magnetic circular dichroism at Ce L_2,3 absorption edges in CeFe₂

K. Asakura, K. Fukui, H. Ogasawara, I. Harada, J. C. Parlebas, A. Kotani

Educational Center for Researchers of the Next Generation

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Magnetic circular dichroism (MCD) of the X-ray absorption spectroscopy (XAS) at the Ce L_2,3 edges in a typical mixed valence compound, CeFe₂, is theoretically studied by using the impurity Anderson model combined with a cluster approach. We find that the hybridization of Ce 5d states with spin-polarized Fe 3d states is responsible for the differences between XAS and MCD, while the Coulomb interaction of a photo-excited 5d electrons plays a novel role, in addition to the many body effects yielding the two-peak structure of XAS.

Original language	English
Pages (from-to)	201-204
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	345
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physb.2003.11.054
Publication status	Published - Mar 1 2004
Event	Proceedings of the Conference on Polarised Neutron - Venice, Italy Duration: Aug 4 2003 → Aug 6 2003

Keywords

Cluster model
L absorption edges
Magnetic circular dichroism

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2003.11.054

Cite this

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title = "Many-body effects in magnetic circular dichroism at Ce L2,3 absorption edges in CeFe2",

abstract = "Magnetic circular dichroism (MCD) of the X-ray absorption spectroscopy (XAS) at the Ce L2,3 edges in a typical mixed valence compound, CeFe2, is theoretically studied by using the impurity Anderson model combined with a cluster approach. We find that the hybridization of Ce 5d states with spin-polarized Fe 3d states is responsible for the differences between XAS and MCD, while the Coulomb interaction of a photo-excited 5d electrons plays a novel role, in addition to the many body effects yielding the two-peak structure of XAS.",

keywords = "Cluster model, L absorption edges, Magnetic circular dichroism",

author = "K. Asakura and K. Fukui and H. Ogasawara and I. Harada and Parlebas, {J. C.} and A. Kotani",

year = "2004",

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doi = "10.1016/j.physb.2003.11.054",

language = "English",

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journal = "Physica B: Condensed Matter",

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note = "Proceedings of the Conference on Polarised Neutron ; Conference date: 04-08-2003 Through 06-08-2003",

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T1 - Many-body effects in magnetic circular dichroism at Ce L2,3 absorption edges in CeFe2

AU - Asakura, K.

AU - Fukui, K.

AU - Ogasawara, H.

AU - Harada, I.

AU - Parlebas, J. C.

AU - Kotani, A.

PY - 2004/3/1

Y1 - 2004/3/1

N2 - Magnetic circular dichroism (MCD) of the X-ray absorption spectroscopy (XAS) at the Ce L2,3 edges in a typical mixed valence compound, CeFe2, is theoretically studied by using the impurity Anderson model combined with a cluster approach. We find that the hybridization of Ce 5d states with spin-polarized Fe 3d states is responsible for the differences between XAS and MCD, while the Coulomb interaction of a photo-excited 5d electrons plays a novel role, in addition to the many body effects yielding the two-peak structure of XAS.

AB - Magnetic circular dichroism (MCD) of the X-ray absorption spectroscopy (XAS) at the Ce L2,3 edges in a typical mixed valence compound, CeFe2, is theoretically studied by using the impurity Anderson model combined with a cluster approach. We find that the hybridization of Ce 5d states with spin-polarized Fe 3d states is responsible for the differences between XAS and MCD, while the Coulomb interaction of a photo-excited 5d electrons plays a novel role, in addition to the many body effects yielding the two-peak structure of XAS.

KW - Cluster model

KW - L absorption edges

KW - Magnetic circular dichroism

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