Resonant Photoemission Study on Valence Band Satellites of Cu_xNi_<1-x>and Ag_xPd_<1-x>Alloy Systems

概要

論文の詳細を見る
The photoelectron spectra of the Cu.Ni. . and Ag.Pd. . alloy systems have beenmeasured by means of a resonant photoemission technique to study the alloying effecton the valence band satellite. In the Cu.Ni. . alloy system, the resonance intensity,which is defined as the arca of the structure of the CDS of the 6 eV satellite normalizedby Ni concentration, is found to increase with increasing Cu concentration. However,the difference intensity, which is defined as the difference between on- and off-resonance spectra normalized by Ni concentration, decreases with increasing Cu con-centration. It is concluded that a valence electron transfer from the Ni 3d state to theCu 4s state occurs upon alloying. This finding does not agree with the rigid bandmodel, which explains the decrease in magnetic moment in terms of alloying. It is sug-gested that the "two-hole bound state" in the Ni or Pd atomic site is a resonant statemixed with the neighboring valence hole state in the Cu or Ag atomic site.
社団法人日本物理学会の論文
1989-06-15