Abstract
A considerable increase of the photoinduced resistivity changes and the lifetime of these changes were found in the Bi0.4Ca0.6MnO3 thin films after depositing gold nanoparticles on the surface. A possible interpretation of this effect may be the enhancement of local electromagnetic field at the interface between the film and the metal nanoparticles due to the plasmon resonance, which may promote formation of larger volume of conducting phase producing larger magnitude and the lifetime of photoinduced resistivity changes.
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