Theory of Magnetic Circular X-Ray Dichroism at the Fe K-Edge in Rare-Earth Iron Garnets

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概要

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• A mechanism is proposed for the magnetic circular X-ray dichroism (IVICXD) at the pre-peakof the Fe A-edge in rare-earth iron garnets. It is found based on a cluster model that, at thepre-peak, the hybridization between the 3d state and the 4p state of an Fe ion on the tetrahedralsite through the ligand 2p states is responsible for the weak electric-dipole absorption while thecornbined effect of the spin-orbit interaction and the spin polarization in the 3d states give riseto its MCXD. In addition, the configuration interaction is shown to be important in explainingthe asymmetric dispersion-type MCXD spectra observed. The effects of the core hole as well asof the band character of the 4p states are discussed briefly in connection with IVICXD observedin the main A-edge region.

• 社団法人日本物理学会の論文
• 1996-09-15

著者

• Harada Isao

  Department Of Physics Faculty Of Science Kobe University

• Suzuki Tomoaki

  Institute For Solid State Physics University Of Tokyo:ics Center Toshiba Ltd.

• Kotani Akio

  Institut De Physique Et Chimiedes Materiaux De Strasbourg Cnrs

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