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Evolution of magnetic oxygen states in Sr-doped LaCoO 3

Medling, Scott; Lee, Y.; Zheng, H.; Mitchell, J.F.; Freeland, J.W.; Harmon, B.N.; Bridges, F.


Magnetism in La 1-xSr xCoO 3 as a function of doping is investigated with x-ray absorption spectroscopy and x-ray magnetic circular dicrhoism at the O K edge, and corresponding first principles electronic structure calculations. For small x, the spectra are consistent with the formation of ferromagnetic clusters occurring within a nonmagnetic insulating matrix. Sr-induced, magnetic O-hole states form just above E F and grow with increasing Sr doping. Density functional calculations for x=0...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.109.157204


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