Calculation of Resonant Photoemission and Auger Spectra in La_2CuO_4
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Cu 37t-resonant photoemission spectrum and Cu M..M.,M., Auger spectrum arecalculated in detail on a cluster of (Cub.)" and (Cub.)' as a model for the high-7'.material La. .Sr(Ba).Cu0.. Various transition matrix elements are evaluated by us-ing the Herman-Skillman potential on Cu and O atoms. A weak resonant enhancement of the satellite intensity exhibiting two-peak structure is obtained near Cu 3p-core level photothreshold, in addition to a large intensity of the main-band peak dueto the direct transition from O atoms. It is shown that the p-d hybridization makesthe satellite peaks broad, particularly the peak with lower binding energy. A stronghole doping is shown to give rise to little effect on the spectral shape with about I eVreduction of the Coulomb repulsion.
- 社団法人日本物理学会の論文
- 1990-05-15
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