The ground state of heavily-overdoped non-superconducting La$_{2-x}$Sr$_x$CuO$_4$
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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
5 pages revtex4, 4 .eps figures