Skip to main content
Phase separation in a high-pressure-oxygenated La2CuO4+δ crystal: Evidence from anisotropic electronic transport and magnetic susceptibility
Abstract
We report magnetic susceptibility, resistivity, and thermoelectric power measurements performed on a high-pressure-oxygenated La2CuO4+ single crystal. Distinct anomalies are present in all three quantities between 200 and 280 K that are attributed to a phase separation involving oxygen diffusion. Hysteresis present in the data near the phase-separation temperature indicates that the process is weakly first order. We suggest that this transition may be driven, in part, by interactions between excess oxygen ions and copper spin magnetism. © 1990 The American Physical Society.
Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.