Fermi-liquid versus non-Fermi-liquid behavior in a two-band model of high-temperature superconductivity
- 1 February 1989
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (4) , 2876-2879
- https://doi.org/10.1103/physrevb.39.2876
Abstract
We solve an extended Hubbard model describing a system with two -fold degenerate bands in the limit . The system exhibits a phase transition from Fermi liquid to non-Fermi liquid as the exchange interaction becomes comparable with the hybridization energy.
Keywords
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