Spin density of ordered FeCo: A failure of the local-spin-density approximation

E. Di Fabrizio*, G. Mazzone, C. Petrillo, F. Sacchetti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


The magnetic structure factor of an equiatomic ordered FeCo compound has been determined by measuring the coherent scattering of a polarized neutron beam from a single-crystal sample. Fourier inversion of the experimental data has allowed us to derive the magnetic moments and the spin-density symmetry at the Fe and Co sites. Considering that both 3d up-spin bands are entirely full it has also been possible to derive the symmetry and the distribution of the charge density. A comparison with available state-of-the-art theoretical calculations has evidenced significant and systematic inadequacies of the local-spin-density approximation.

Original languageEnglish (US)
Pages (from-to)9502-9507
Number of pages6
JournalPhysical Review B
Issue number14
StatePublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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