Nonlocal Screening Effect in Cu 4p_σ-1s Resonant X-ray Emission Spectra in Nd_2CuO_4 : Condensed Matter: Electronic Properties, etc.

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概要

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• We theoretically study polarization and momentum-transfer dependence in Cu 4p_σ-1s resonant X-ray emission spectra (RXES) of Nd_2CuO_4 with exact diagonalization techniques, developing our previous report [T. Ide and A. Kotani, J. Phys. Soc. Jpn. 68 (1999) 3100]. We explain the experimental polarization and angular dependence of a charge-transfer excitation about 5.7 eV above the ground state. Comparing results calculated with single- and multi-Cu models, we confirm the essential contribution of the nonlocal screening effect in Cu 4p_σ-1s RXES, together with the configuration dependence of d-p hybridization. We predict considerable dependence of a CT excitation at about 2 eV on momentum transfer along the CuO_2 planes, and the 5.7 eV excitation has less dependence.

• 社団法人日本物理学会の論文
• 2000-09-15

著者

• Ide Tsuyoshi

  Ibm Research Tokyo Research Laboratory

• KOTANl Akio

  Institute for Solid State Physics, The University of Tokyo

• Kotanl Akio

  Institute For Solid State Physics The University Of Tokyo

関連論文

• Theoretical and Experimental Study of Resonant 3d X-Ray Photoemission and Resonant L_3M_M_ Auger Transition of PdO : Condensed Matter: Electronic Properties, etc.
• Nonlocal Screening Effect in Cu 4p_σ-1s Resonant X-ray Emission Spectra in Nd_2CuO_4 : Condensed Matter: Electronic Properties, etc.

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