Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-06-25
Phys. Rev. B, 68 (2003) 024413
Physics
Condensed Matter
Strongly Correlated Electrons
22 pages, 10 figures, submitted to Rhys. Rev. B
Scientific paper
10.1103/PhysRevB.68.024413
Optical absorption and transverse Kerr effect spectra, resistivity and magnetoresistance of La$_{1-x}$Sr$_{x}$CoO$_3$ ($x=0.15, 0.25, 0.35$) films have been studied. The temperature dependencies of the optical and magneto-optical properties of the films exhibit features, which can be attributed to the transition of the Co$^{3+}$ ions from the low-spin state (S=0) to the intermediate-spin state (S=1) and to orbital ordering of the Co$^{3+}$ ions in the latter state. The evolution of the properties influenced by doping with Sr is interpreted on the basis of the phase separation model.
Belevtsev B. I.
Chukanova I. N.
Gan'shina E. A.
Krasovitsky V. B.
Loshkareva N. N.
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