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arXiv · cond-mat/0509351

Electronic structure and transport properties of La_0.7Ce_0.3MnO_3

W. J. Chang·J. Y. Tsai·H. -T. Jeng·J. -Y. Lin·Kenneth Y. -J. Zhang·H. L. Liu·J. M. Lee·J. M. Chen·K. H. Wu·T. M. Uen·Y. S. Gou·J. Y. Juang
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Abstract

X-ray absorption spectroscopy (XAS), optical reflectance spectroscopy, and the Hall effect measurements were used to investigate the electronic structure in La_0.7Ce_0.3MnO_3 thin films (LCeMO). The XAS results are consistent with those obtained from LDA+U calculations. In that the doping of Ce has shifted up the Fermi level and resulted in marked shrinkage of hole pockets originally existing in La_0.7Ca_0.3MnO_3 (LCaMO). The Hall measurements indicate that in LCeMO the carriers are still displaying the characteristics of holes as LDA+U calculations predict. Analyses of the optical reflectance spectra evidently disapprove the scenario that the present LCeMO might have been dominated by the La-deficient phases.

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W. J. Chang, J. Y. Tsai, H. -T. Jeng, J. -Y. Lin, Kenneth Y. -J. Zhang, H. L. Liu, J. M. Lee, J. M. Chen, K. H. Wu, T. M. Uen, Y. S. Gou, J. Y. Juang. 2005-09-14. Electronic structure and transport properties of La_0.7Ce_0.3MnO_3. https://doi.org/10.1103/physrevb.72.132410

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