Scaling behavior of spectral weight changes in perovskite manganites La0.7-yPryCa0.3MnO3

K. H. Kim, J. H. Jung, D. J. Eom, T. W. Noh, Jaejun Yu, E. J. Choi

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


Optical conductivity spectra of La0.7-yPryCa0.3MnO3 were systematically investigated. For metallic samples, the spectral weight below 0.5 eV, whose magnitude can be represented by an effective carrier number Neff(0.5eV), increases as temperature becomes lower. Regardless of the Pr doping, all the measured values of Neff(0.5eV)/TC fall into one scaling curve. This scaling behavior could be explained by the theoretical model by Röder et al. [Phys. Rev. Lett. 76, 1356 (1996)], which includes spin double exchange and Jahn-Teller lattice coupling to holes.

Original languageEnglish
Pages (from-to)4983-4986
Number of pages4
JournalPhysical Review Letters
Issue number22
StatePublished - 1998


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