Superconductivity and phase separation in La2CuO4+x
Zakharov A. A., Nikonov A. A.
It has been observed that the superconducting properties of the La2Cu04+x (*=£0.04) system depend substantially on how the excess oxygen is distributed in the sample: uniformly or in a manner which results in the formation of a new phase. Precise measurements of the magnetic susceptibility of oxygenated La2Cu04+J. crystals, combined with data found previously, lead to a revision of the phase diagram of this system. © American Institute of Physics.