A need for high-resolution Compton scattering study of hcp metals with the use of synchrotron radiation

Electronic Origin of the Structural Anomalies of Zinc and Cadmium

“…Directional Compton profiles for the most relevant directions of hcp metals were previously recorded for zinc19,20, magnesium20 and cadmium20 with medium resolution (0.4 a.u. ), using a γ ‐ray source.…”

Electron momentum density of hexagonal Zn studied by high-resolution Compton scattering

“…The electronic structure of Zn ([Ar] 3d 10 4s 2 ) and other divalent hexagonal close-packed (hcp) transition metals like Mg ([Ne] 3s 2 ) and Cd ([Kr] 4d 10 5s 2 ) have been the subject of experimental (Joseph & Gordon, 1962;Steenhaut & Goodrich, 1970;Almond et al, 1975;Perkkiö et al, 1991;Reniewicz et al, 2001;Bellin et al, 2004;Brancewicz et al, 2007) and theoretical (Harrison, 1962;Stark & Falicov, 1967;Borghese & Denti, 1971Daniuk et al, 1989;Novikov et al, 1999) studies for many years. Experimental data concerned with the electronic structure of these relatively simple metals, where crystal symmetry mainly determines the behaviour of the conduction electrons, are of relevance to ab initio bandstructure calculations.…”

“…Subtraction of two directional CPs, measured at two specific crystallographic directions, removes all isotropic components from the CPs (i.e. core electrons and background contributions) and forms the so-called difference profiles (anisotropies), which reveal the anisotropy of the electron momentum density distribution associated with the crystal symmetry and the shape of the Fermi surface (fermiology) of the studied material (Sakurai et al, 1995;Hä mä lä inen et al, 1996;Dugdale et al, 2000;Reniewicz et al, 2001;Mizusaki et al, 2003;Bellin et al, 2004;Dugdale et al, 2006;Brancewicz et al, 2007;Huotari et al, 2007;Choudhary et al, 2011;Brancewicz et al, 2013;Sharma et al, 2015).…”

“…Following this idea, the need for high-resolution and high experimental statistics Compton scattering measurements for hexagonal metals (Mg, Zn, Cd) with the use of synchrotron radiation was suggested by Brancewicz et al (2007). This kind of experiment was successfully carried out for a magnesium single crystal with the lowest atomic number among those three metals (Brancewicz et al, 2013).…”