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Properties of Phase-Separated, Super-Oxygenated La2−x Sr x CuO4+y

Emery, S. B. and Wells, B.O (2008) Properties of Phase-Separated, Super-Oxygenated La2−x Sr x CuO4+y. Journal of Superconductivity and Novel Magnetism . ISSN 15571939

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We review a series of experiments that have established that super-oxygenated La2−x Sr x CuO4+y phase-separates at low temperature into large magnetic and superconducting regions, driven by the physics of the doped holes themselves. Magnetization studies of trapped flux indicate that the large phase-separated magnetic and superconducting regions develop from nanoscale regions of charge inhomogeneity present in Sr-doped La2CuO4 and other more commonly studied cuprates. Neutron studies of the elastic magnetic diffraction show that the peak intensity grows with applied field as in La2−x Sr x CuO4. However, the magnitude of the increase varies widely and is not well accounted for by current theory.

Item Type:Article
Uncontrolled Keywords:Superconductivity - Phase separation - Flux trapping - Neutron diffraction
Subjects:Physical Science > Nanophysics
ID Code:229
Deposited By:Lesley Tobin
Deposited On:18 Dec 2008 16:31
Last Modified:18 Dec 2008 16:31

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