Bulk magnetic properties and phase diagram of Li-doped La 2 CuO 4 : Common magnetic response of hole-doped CuO 2 planes

Although ${\mathrm{La}}_{2}{\mathrm{Cu}}_{1\ensuremath{-}x}{\mathrm{Li}}_{x}{\mathrm{O}}_{4}$ (Li-LCO) differs from ${\mathrm{La}}_{2\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{CuO}}_{4}$ (Sr-LCO) in many ways (e.g., the absence of metallic transport, high-${T}_{c}$ superconductivity, and incommensurate antiferromagnetic correlations), it has been known that certain magnetic properties are remarkably similar. The present work establishes the detailed bulk magnetic phase diagram of Li-LCO $(0l~xl~0.07),$ which is found to be nearly identical to that of lightly-doped Sr-LCO, and therefore extends the universality of the phase diagram to hole-doped but nonsuperconducting cuprates.