Key points are not available for this paper at this time.
A detailed study of the generalized susceptibility (q) of Sc metal determined from an accurate augmented-plane-wave method calculation of its energy-band structure is presented. The calculations were done by means of a computational scheme for (q) derived as an extension of the work of Jepsen and Andersen and Lehmann and Taut on the density-of-states problem. The procedure yields simple analytic expressions for the (q) integral inside a tetrahedral microzone of the Brillouin zone which depends only on the volume of the tetrahedron and the differences of the energies at its corners. Constant-matrix-element results have been obtained for Sc which show very good agreement with the results of Liu, Gupta, and Sinha (but with one less peak) and exhibit a first maximum in (q) at (0, 0, 0. 31) 2c vs (0, 0, 0. 35) 2c obtained by Liu et al. which relates very well to dilute rare-earth alloy magnetic ordering at {q}₌= (0, 0, 0. 28) 2c and to the kink in the LA-phonon dispersion curve at (0, 0, 0. 27) 2c.
Rath et al. (Sat,) studied this question.