Temperature evolution of the 1.5-eV absorption band in doped manganites: Formation of Jahn-Teller clusters
- 15 November 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 58 (19), 12540-12542
- https://doi.org/10.1103/physrevb.58.12540
Abstract
A systematic investigation of the absorption spectra of thin films of doped manganites has revealed an anomalous temperature variation of the ∼1.5-eV absorption band. On approaching the insulator-metal transition temperature from the high-temperature side, the band increases in intensity and then merges into the Drude-like band in the ferromagnetic metallic state. We have interpreted the temperature variation in terms of formation and disappearance of Jahn-Teller clusters.
Keywords
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