2002/09/04 by J. H. Kim, J. S. Ahn, Jinsoo Kim +6 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Absorption (acoustics) #Inorganic Chemistry and Materials #Optics #Physics #Rare-earth and actinide compounds #Thermal Expansion and Ionic Conductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.66.172507
12 pages, 4 figures
arxiv created 2002/09/04 · openalex publication_date 2002/11/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigated electronic structure of MgC_1\ensuremath-xNi3 with photoemission and x-ray absorption spectroscopy. Both results show that overall band structure is in reasonable agreement with band structure calculations including the existence of von Hove singularity (vHs) near EF. However, we find that the sharp vHs peak theoretically predicted near the EF is substantially suppressed. As for the Ni core level and absorption spectrum, there exist the satellites of Ni 2p which have a little larger energy separation and reduced intensity compared to the case of Ni-metal. These facts indicate that correlation effects among Ni 3d electrons may be important to understand various physical properties.