Abstract
We obtain and discuss the self-energy and the renormalized electronic structure of the normal state in strongly correlated electron systems within the pseudogap regime. The effective potentials considered are found from spin fluctuations within a three-dimensional Hubbard single band model. Vertex effects are included and discussed within this formalism. We find that the self-energy tends to violate the Luttinger theorem when the bandwidths are narrowed. We note that when the bands are further narrowed, the corresponding Eliashberg-like equations tend to yield superconductivity.
Original language | English |
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Pages (from-to) | 471-481 |
Journal | Physica Status Solidi (B) Basic Research |
Volume | 201 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Jan 1997 |