Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-07-19
Physica B 318 (2002) 272-276
Physics
Condensed Matter
Strongly Correlated Electrons
3 pages, 2 figures, 6th Patras University Euroconference on Properties of Condensed Matter probed with X-ray Scattering: Elect
Scientific paper
We present a discussion of published x-ray magnetic circular dichroism (XMCD) measurements performed at the uranium M_4,5 edges of metallic uranium compounds, focusing on the shape of the dichroic signal at the M_5 edge. A well resolved double lobe structure, comprised of a positive and a negative peak, is sometimes observed. Out of the twelve metallic uranium compounds so far investigated by XMCD, six exhibit an intense double-lobe structure at the M_5 edge. This line shape gives information on the empty 5f magnetic density of states with angular quantum number j=7/2. Conclusions about the difference between these two families of compounds are given regarding the splitting of the j=7/2 band and the occupation among the different m_7/2 sublevels.
de Reotier Dalmas P.
Yaouanc A.
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