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Only Fermi-Liquids are Metals

C. M. Varma
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Abstract

Any singular deviation from Landau Fermi-liquid theory appears to lead, for arbitrarily small concentration of impurities coupling to a non-conserved quantity, to a vanishing density of states at the chemical potential and infinite resistivity as temperature approaches zero. Applications to copper-oxide metals including the temperature dependence of the anisotropy in resistivity, and to other cases of non Fermi-liquids are discussed.

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C. M. Varma. 1997-03-12. Only Fermi-Liquids are Metals. https://doi.org/10.1103/physrevlett.79.1535

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