Strongly correlated electron materials. II. Band structure and renormalized density of states in heavy-fermion systems and high-Tc superconductors
J. Costa-Quintana, F. López-Aguilar, L. Puig-Puig
DOI 10.1103/PhysRevB.48.1139 · Physical Review B
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Abstract
We give a method for obtaining renormalized electronic structures arising from quasiparticle band structures of actual Hubbard systems, using some of the self-energies deduced in paper I of this series. The quasiparticle band structures are determined from an appropriate modification of the augmented plane-wave method, and the renormalized density of states is found from the spectral functions. We calculate the quasiparticle structure of a Ce system, which presents the three characteristic types of resonances of the pseudogap regime mentioned in paper I of this series and also the electronic structure of Y-Ba-Cu-O, which seems to display the characteristics of a standard Fermi liquid or a marginal Fermi liquid.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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