Abstract

Quasiparticle densities of states are investigated for the threedimensional Hubbard model in the limit of strong coupling I > Δ ( Δ = bandwidth) and for temperatures T → 0 by using the “method of spectral moments”. The densities of states depend on (i) the lattice structure, (ii) the band occupation and (iii) the magnetization of the system. Therefore these functions are evaluated for s.c.-, b.c.c.- and f.c.c.-lattices for some typical band occupations, and thereby first of all the influence of the magnetization is discussed.

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