The ground state of heavily-overdoped non-superconducting   La$_{2-x}$Sr$_x$CuO$_4$
  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. 
S. Nakamae, K. Behnia, N. Mangkorntong, M. Nohara, H. Takagi, S. J. C.   Yates and N. E. Hussey