Contribution of the Si s Electronic State to the Density of State of CoSi2 at Fermi Energy by Soft X-Ray Emission Spectroscopy
- 1 March 1990
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 29 (3A) , L470-472
- https://doi.org/10.1143/jjap.29.l470
Abstract
A clear modification is observed between an electron-excited Si L2.3 valence band (VB) soft X-ray emission spectrum (SXES) for CoSi2 and the one for Si. From this fact, it is concluded that a fair amount of the Si s electronic state is included in the upper half, especially at the Fermi edge, of the VB density of state (VB-DOS) of CoSi2. This fact is a clear contrast to many proposals given so far, where it is claimed that the upper part of the VB-DOS of CoSi2 is constructed only by the electronic states due to Co(3d)-Si(3p) hybridization.Keywords
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