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arXiv · 1510.07750

Distinct Magnetic Phases in Structurally Uniform SrCoO$_{3-y}$

Z. H. Zhu·F. J. Rueckert·J. I. Budnick·W. A. Hines·Ch. Niedermayer·L. Keller·H. Luetkens·B. Dabrowski·S. Kolesnik·B. O. Wells
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Abstract

Two magnetic phase transitions have been noted for SrCoO$_{3-y}$ for near-stoichiometric oxygen concentrations (small y). Using muon spin rotation and neutron scattering experiments, we have established that the two transitions represent separate, spatially distinct magnetic phases that coexist in a two-phase equilibrium mixture. The two phases most likely represent areas of the sample with different effective valence charge density. Further, the phases exist over regions with a length scale intermediate between nanoscale charge inhomogeneity and systems such as manganites or super-oxygenated cuprates with large length scale phase separation.

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Z. H. Zhu, F. J. Rueckert, J. I. Budnick, W. A. Hines, Ch. Niedermayer, L. Keller, H. Luetkens, B. Dabrowski, S. Kolesnik, B. O. Wells. 2016-04-15. Distinct Magnetic Phases in Structurally Uniform SrCoO$_{3-y}$. https://doi.org/10.1103/physrevb.93.224412

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