The self-consistent quasiparticle density of states of paramagnetic transition metals

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Abstract
The authors have reported on self-consistent second-order perturbation theory (SC) calculations of one-particle spectra of metals described by a simple model (rectangular and semielliptic) uncorrelated band local density of states. They have found that any additional (satellite) structure in one-particle spectra appearing in the non-self-consistent approach is smoothed out by the SC process. However, real metals reveal rather complicated structure of the density of states so they feel it to be necessary to verify again to what extent a more complex and d-band nickel realistic band LDOS is modified by correlation effects. Firstly they present a short recapitulation of the SOPT approach developed by Treglia et al. (1980) and describe the SC procedure; secondly report on numerical results and give a short discussion.