Asymptotically exact solution of a local copper-oxide model

Guang-Ming Zhang; Lu Yu

doi:10.1103/physrevlett.72.2474

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arXiv · cond-mat/9403059

Asymptotically exact solution of a local copper-oxide model

Guang-Ming Zhang·Lu Yu

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Abstract

We present an asymptotically exact solution of a local copper-oxide model abstracted from the multi-band models. The phase diagram is obtained through the renormalization-group analysis of the partition function. In the strong coupling regime, we find an exactly solved line, which crosses the quantum critical point of the mixed valence regime separating two different Fermi-liquid (FL) phases. At this critical point, a many-particle resonance is formed near the chemical potential, and a marginal-FL spectrum can be derived for the spin and charge susceptibilities.

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Guang-Ming Zhang, Lu Yu. 1994-03-16. Asymptotically exact solution of a local copper-oxide model. https://doi.org/10.1103/physrevlett.72.2474

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