<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>1</mn><mi>s</mi><mn>2</mn><mi>p</mi></math></span> resonant inelastic x-ray scattering in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi><mo>−</mo><mrow><msub><mrow><mi mathvariant="normal">Fe</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>

W. A. Caliebe; C.-C. Kao; J. B. Hastings; M. Taguchi; A. Kotani; T. Uozumi; F. M. F. de Groot

doi:10.1103/PhysRevB.58.13452

$1 s 2 p$ resonant inelastic x-ray scattering in $α - {Fe}_{2} O_{3}$

W. A. Caliebe, C.-C. Kao, J. B. Hastings, M. Taguchi, A. Kotani, T. Uozumi, and F. M. F. de Groot

Phys. Rev. B 58, 13452 – Published 15 November 1998

Abstract

We report experimental and theoretical results on the Fe K edge x-ray absorption spectrum and $1 s 2 p$ resonant inelastic x-ray scattering (RIXS) spectra in $α - {Fe}_{2} O_{3} .$ The results are interpreted using an ${FeO}_{6}^{9 -}$ cluster model with intra-atomic multiplet coupling and interatomic covalency hybridization. The $1 s 2 p$ RIXS is treated as a coherent second-order optical process. It is shown that the double-peak structure in the pre-edge region of Fe K absorption spectrum is due to the cubic crystal-field splitting, and that the intensity of the $e_{g} {(t}_{2 g})$ component in the $1 s 2 p$ resonant inelastic spectrum is enhanced by tuning the incident photon energy to the $e_{g} {(t}_{2 g})$ component in the absorption spectrum.

Received 18 March 1998

DOI:https://doi.org/10.1103/PhysRevB.58.13452

Authors & Affiliations

W. A. Caliebe^*, C.-C. Kao, and J. B. Hastings

National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973

M. Taguchi^† and A. Kotani

Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku, Tokyo 106, Japan

T. Uozumi

College of Engineering, University of Osaka Prefecture, Gakuen-cho, Sakai 593, Japan

F. M. F. de Groot

Solid State Physics Laboratory, University of Groningen, Nijenborgh 4 9747 AG Groningen, The Netherlands

^*Present address: Institut für Festkörperforschung, Forschungszentrum Jülich, 54245 Jülich, Germany.
^†Present address: IPCMS-GEMM, UMR7503 CNRS, 23 Rue Du Loess, 67037 Strasbourg, France.

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Vol. 58, Iss. 20 — 15 November 1998

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