Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound

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

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We use a model interpretation for the observed MCXD (Magnetic Circular X-ray Dichroism) in L2,3 XAS (X-ray Absorption Spectra) of CeRu2Ge2 as a typical example of normal trivalent cerium compounds. Even in this simplest case of Ce compounds, our analysis needs detailed information on the 4f states, which affect indirectly the electric-dipole transition (2p-5d) through the 4f-5d exchange interaction. We find that the tetragonal crystal field in addition to the spin-orbit coupling for the 4f states is a key interaction to reproduce the MCXD spectra based on an atomic model, in which the polarization effect on the 5d ground state as well as an enhancement of the transition dipole matrix element due to a contraction in the radial part of the 5d orbitals are phenomenologically included.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume104
Issue number1-3
Publication statusPublished - 1999

Fingerprint

cerium compounds
Cerium compounds
X ray absorption
Dichroism
dichroism
Absorption spectra
absorption spectra
X rays
Exchange interactions
Ground state
Orbits
x rays
Polarization
electric dipoles
Crystals
contraction
crystal field theory
interactions
dipoles
orbits

Keywords

  • Crystal fields
  • L edges
  • MCXD
  • Trivalent cerium compounds

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Fukui, K., Matsuyama, H., Harada, I., Parlebas, J. C., & Kotani, A. (1999). Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound. Journal of Electron Spectroscopy and Related Phenomena, 104(1-3), 67-72.

Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound. / Fukui, K.; Matsuyama, H.; Harada, I.; Parlebas, J. C.; Kotani, A.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 104, No. 1-3, 1999, p. 67-72.

Research output: Contribution to journalArticle

Fukui, K, Matsuyama, H, Harada, I, Parlebas, JC & Kotani, A 1999, 'Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound', Journal of Electron Spectroscopy and Related Phenomena, vol. 104, no. 1-3, pp. 67-72.
Fukui, K. ; Matsuyama, H. ; Harada, I. ; Parlebas, J. C. ; Kotani, A. / Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound. In: Journal of Electron Spectroscopy and Related Phenomena. 1999 ; Vol. 104, No. 1-3. pp. 67-72.
@article{fcf61c6a33f24ae696b0555577d31a01,
title = "Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound",
abstract = "We use a model interpretation for the observed MCXD (Magnetic Circular X-ray Dichroism) in L2,3 XAS (X-ray Absorption Spectra) of CeRu2Ge2 as a typical example of normal trivalent cerium compounds. Even in this simplest case of Ce compounds, our analysis needs detailed information on the 4f states, which affect indirectly the electric-dipole transition (2p-5d) through the 4f-5d exchange interaction. We find that the tetragonal crystal field in addition to the spin-orbit coupling for the 4f states is a key interaction to reproduce the MCXD spectra based on an atomic model, in which the polarization effect on the 5d ground state as well as an enhancement of the transition dipole matrix element due to a contraction in the radial part of the 5d orbitals are phenomenologically included.",
keywords = "Crystal fields, L edges, MCXD, Trivalent cerium compounds",
author = "K. Fukui and H. Matsuyama and I. Harada and Parlebas, {J. C.} and A. Kotani",
year = "1999",
language = "English",
volume = "104",
pages = "67--72",
journal = "Journal of Electron Spectroscopy and Related Phenomena",
issn = "0368-2048",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - Phenomenological interpretation of MCXD in L2,3 XAS of trivalent cerium compound

AU - Fukui, K.

AU - Matsuyama, H.

AU - Harada, I.

AU - Parlebas, J. C.

AU - Kotani, A.

PY - 1999

Y1 - 1999

N2 - We use a model interpretation for the observed MCXD (Magnetic Circular X-ray Dichroism) in L2,3 XAS (X-ray Absorption Spectra) of CeRu2Ge2 as a typical example of normal trivalent cerium compounds. Even in this simplest case of Ce compounds, our analysis needs detailed information on the 4f states, which affect indirectly the electric-dipole transition (2p-5d) through the 4f-5d exchange interaction. We find that the tetragonal crystal field in addition to the spin-orbit coupling for the 4f states is a key interaction to reproduce the MCXD spectra based on an atomic model, in which the polarization effect on the 5d ground state as well as an enhancement of the transition dipole matrix element due to a contraction in the radial part of the 5d orbitals are phenomenologically included.

AB - We use a model interpretation for the observed MCXD (Magnetic Circular X-ray Dichroism) in L2,3 XAS (X-ray Absorption Spectra) of CeRu2Ge2 as a typical example of normal trivalent cerium compounds. Even in this simplest case of Ce compounds, our analysis needs detailed information on the 4f states, which affect indirectly the electric-dipole transition (2p-5d) through the 4f-5d exchange interaction. We find that the tetragonal crystal field in addition to the spin-orbit coupling for the 4f states is a key interaction to reproduce the MCXD spectra based on an atomic model, in which the polarization effect on the 5d ground state as well as an enhancement of the transition dipole matrix element due to a contraction in the radial part of the 5d orbitals are phenomenologically included.

KW - Crystal fields

KW - L edges

KW - MCXD

KW - Trivalent cerium compounds

UR - http://www.scopus.com/inward/record.url?scp=0042895391&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0042895391&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0042895391

VL - 104

SP - 67

EP - 72

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

SN - 0368-2048

IS - 1-3

ER -