Elektronenzustandsdichte in der Lavesphase MgZn₂

Abstract

Elektronenzustandsdichte in d e r Lavesphase MgZn2 Von G. LEHMANN, P. RENNERT, M. TAUT und H. WONN In einer kUrzlich erschienenen Arbeit (I) wird geschildert, wie mit d e r Pseudo-

Early work on Laves phases in East Germany

“…Flat energy bands form due to splitting of crossed bands, giving rise to many vanHove singularities and a very structured density of electron states with minimum near the Fermi energy E F ¼ 8.6 eV [81,82]. Since de Haas-van Alphen measurements of this phase were available [80], Rennert et al [83] could show that their pseudo potential Fermi surface up to energy band 14 was in much better agreement with the experimental data than the free electron model.…”

“…Furthermore, they predicted resonances not yet observed. In order to provide quantum theoretical links to other properties, the electron density of states of MgZn 2 had been evaluated by Lehmann et al [81]. One of these properties was the electronic term, g, of the heat capacity C [61], (c) ZrFe 2 [61] and (d) NbFe 2 [49].…”

Role of vibrational entropy in the stabilization of the high-temperature phases of iron

“…The phonon densities of states for each of the measured temperatures as calculated from the force constants by the tetrahedron method [48,49] are given to the right of the phonon dispersions in Fig. 1.…”

Band structure effects for dripped neutrons in neutron star crust

“…The GR method seems to be not so popular as the tetrahedron method in solid state physics, in which the irreducible domain is divided into tetrahedra and the energy is linearly interpolated from its values at the four corners of each tetrahedron [25] [26]. One of the main reasons is that the calculation of the velocity may be computationally expensive with more elaborate basis functions than plane waves.…”