Publication Date:
2011-07-06
Description:
Author(s): José Luis García-Muñoz, Carlos Frontera, Aura J. Barón-González, Sergio Valencia, Javier Blasco, Ralf Feyerherm, Esther Dudzik, Radu Abrudan, and Florin Radu X-ray absorption spectroscopy measurements in Pr 0.5 Ca 0.5 CoO 3 and (Pr,Y) 0.55 Ca 0.45 CoO 3 compositions reveal that the valence of praseodymium ions is stable and essentially + 3 (Pr [4 f 2 ]) in the metallic state, but abruptly changes when carriers localize approaching the oxidation state + 4 (Pr [4 f 1 ]). Th... [Phys. Rev. B 84, 045104] Published Tue Jul 05, 2011
Keywords:
Electronic structure and strongly correlated systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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