Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-04-21
J. Phys. Soc. Jpn., 72 (2003) 2071-2078
Physics
Condensed Matter
Strongly Correlated Electrons
9 pages, 14 figures
Scientific paper
We propose the pf+pd mixing model for CeSb to explain the stability of the ferromagnetic double layer structure in the magnetic ordering. The pd mixing causes the saddle type singular points, neighboring the $\Delta$ axis, for the bands which gain energy through the pf hybridization with the occupied f state. The peak of the density of states due to this combined effect of the pf mixing and the pd mixing enhances the stability of the double layer structure. The same combined effect also causes the saddle type singular points in the joint density of states of the optical transition. The peak structure of the magneto-optical spectra which has been observed in experiments is explained by the present model.
Ishiyama Fumihiko
Sakai Osamu
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