Properties of Phase-Separated, Super-Oxygenated La2−xSrxCuO4+y

We review a series of experiments that have established that super-oxygenated La 2− x Sr x CuO 4+ 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 p...

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Bibliographic Details
Published inJournal of superconductivity and novel magnetism Vol. 22; no. 1; pp. 33 - 36
Main Authors Emery, S. B., Wells, B. O.
Format Journal Article
LanguageEnglish
Published Boston Springer US 2009
Subjects
Characterization and Evaluation of Materials
Condensed Matter Physics
Magnetic Materials
Magnetism
Original Paper
Physics
Physics and Astronomy
Strongly Correlated Systems
Superconductivity
Neutron diffraction
Phase separation
Superconductivity
Flux trapping
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Summary:We review a series of experiments that have established that super-oxygenated La 2− x Sr x CuO 4+ 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 La 2 CuO 4 and other more commonly studied cuprates. Neutron studies of the elastic magnetic diffraction show that the peak intensity grows with applied field as in La 2− x Sr x CuO 4 . However, the magnitude of the increase varies widely and is not well accounted for by current theory.
ISSN:1557-1939
1557-1947
DOI:10.1007/s10948-008-0357-5