We have studied the electronic structure of CrO2 by photoemission spectroscopy and specific heat measurements. The Cr 3d band shows a splitting into the upper and lower Hubbard bands with a small but finite density of states at the Fermi level, consistent with its metallic behavior. The small renormalization factor (z∼0.1≪1) signifies strong electron correlation, but is still large compared with many 3d transition-metal oxides.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 1997 Dec 15|
ASJC Scopus subject areas
- Condensed Matter Physics