Physics – Condensed Matter – Materials Science
Scientific paper
2002-02-09
Mat. Sci. Forum 363-365, 558-560 (2001)
Physics
Condensed Matter
Materials Science
Scientific paper
Electron-positron momentum densities in Y, reconstructed from two-dimensional angular correlation of annihilation radiation spectra, are compared with the theoretical predictions of fully-relativistic augmented plane-wave calculations. Knowledge of the theoretical densities and of the effects on them of certain symmetry selection rules has allowed us to separate two hole Fermi sur-faces in the third and fourth bands and to establish some Fermi momenta for each of them.
Kontrym-Sznajd G.
Sormann H.
West R. N.
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