Societe Francaise du Vide:19 rue du Renard, 75004 Paris France:011 33 1 42781582
Abstract
We present an experimental and theoretical study of the electronic properties of Ca silicides. The valence states of Ca2Si, CaSi and CaSi2 are analysed by synchrotron radiation photoemission experiments and interpreted in terms of a LMTO-ASA self-consistent calculation of the electronic states. We found evidence of a Ca d – Si p interaction, similar to that found in transition metal silicides. This interaction is responsible for the increasing number of occupied d states on increasing Si content
