Electronic States of Ce_xLa_<1-x>Cu_6 Studied by Resonant Photoemission

概要

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The energy states of 4f electrons in Ce.La. ,Cu. (.V=0, 0.2, 0.5, 0.8, l) have beenstudied by means of resonant photoemission. At any concentration of cerium ions,the energy distribution of 4 f partial density of states shows a leading peak with a skewLorentzian shape and weak features on both sides of the peak. As the concentrationof cerium ions increases, the width of the leading peak increases and its positionmoves toward the low binding energy, and the 4f partial density of states per ceriumatom near the Fermi edge increases. Fine structures near the 4d threshold inphotoyield spectra have also been observed. The shape of the 'D. line of the Tan-thanum ion varies with the concentration of lanthanum ions. The origin of the ob-served dependence of energy distribution curves and photoyield spectra on the concen-tration of cerium Tons is discussed.
社団法人日本物理学会の論文
1986-12-15