Normal-emission photoelectron spectra were recorded from Cr(110) at 80 K (below the Néel temperature of TN=312 K) with photon energies from 20 to 120 eV. Assuming a free-electron final band, bulk energy-band dispersions along the  (M) direction normal to the surface are determined. The results are compared with previously calculated band structures for the antiferromagnetic phase. Contrary to earlier claims, we find no evidence for a valence-band satellite in Cr. Temperature-dependent studies were also presented that reveal the disappearance of an emission from the 3 initial-state band (corresponding to the G3 band in the paramagnetic phase) at temperatures above TN for a specific k region. This result is discussed in terms of the bulk magnetic phase transition.
ASJC Scopus subject areas
- Condensed Matter Physics