Magnetic Properties and Phase Diagram of Li-doped La(2)CuO(4): Common Magnetic Response of Hole-doped CuO2 Planes

TL;DR

This study maps the magnetic phase diagram of Li-doped La2CuO4, revealing that its magnetic properties are nearly identical to those of Sr-doped La2CuO4, thus suggesting universal magnetic behavior in hole-doped cuprates regardless of superconductivity.

Contribution

It provides the detailed bulk magnetic phase diagram of Li-doped La2CuO4, demonstrating its similarity to Sr-doped counterparts and extending the universality of magnetic responses in hole-doped cuprates.

Findings

Li-doped La2CuO4 has a magnetic phase diagram nearly identical to Sr-doped La2CuO4.

The phase diagram extends the universality of magnetic properties to nonsuperconducting cuprates.

Magnetic responses are common across different hole-doped cuprates despite differences in transport and superconductivity.

Abstract

Although La(2)Cu(1-x)Li(x)O(4) [Li-LCO] differs from La(2-x)Sr(x)CuO(4) [Sr-LCO] in many ways (e.g., the absence of metallic transport, high-Tc 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 (0 <= x <= 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.