Resonant Photoemission and X-Ray Photoemission Spectra of UPd_2Al_3, UPt_2Si_2 and U_2PtSi_3

概要

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The valence-conduction band structures of UPd_2Al_3, UPt_2Si_2 and U_2PtSi_3 have been studied by means of photoemission spectroscopy with synchrotron radiation. The spectral distributions of the partial densities of states with various symmetries in the valence-conduction states are obtained by means of resonant photoemission. The 5f partial energy-distribution-curves have sharp Fermi edges. Single peaks of the 5f partial spectra are located at the Fermi edges and the spectra have long tails ascribable to superimposed indistinguishable hump features. It is suggested that they are caused by the existence of satellites. The U4f spectra are also measured. They exhibit well-defined satellite features. The distinctive line shapes of the main lines and the satellites are analyzed using the Kotani-Toyozawa model, on which the interpretation of the 5f partial spectra is based implicitly.
社団法人日本物理学会の論文
1994-06-15