The ground state of heavily-overdoped non-superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$

Abstract

We report detailed thermodynamic and transport measurements for non-superconducting La${}_{1.7}$Sr${}_{0.3}$CuO${}_4$. Collectively, these data reveal that a highly-correlated Fermi-liquid ground state exists in La${}_{2-x}$Sr${}_x$CuO${}_4$ beyond the superconducting dome, and confirm that charge transport in the cuprates is dominated at finite temperatures by intense electron-electron scattering.

5 pages revtex4, 4 .eps figures

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