Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1997-02-27
Physics
Condensed Matter
Strongly Correlated Electrons
14 pages, 10 PostScript figures, RevTeX, submitted to PRB
Scientific paper
10.1103/PhysRevB.56.7149
We present a method which allows to include narrow-band correlation effects into the description of both valence and core states and we apply it to the prototypical case of nickel. The results of an ab-initio band calculation are used as input mean-field eigenstates for the calculation of self-energy corrections and spectral functions according to a three-body scattering solution of a multi-orbital Hubbard hamiltonian. The calculated quasi-particle spectra show a remarkable agreement with photoemission data in terms of band width, exchange splitting, satellite energy position of valence states, spin polarization of both the main line and the satellite of the 3p core level.
Arcangeli C.
Bellini Valerio
Manghi Franca
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