  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.
