Persistent X-Ray Photoconductivity and Percolation of Metallic Clusters in Charge-Ordered Manganites

D. Casa, V. Kiryukhin, O. A. Saleh +4

Charge-ordered manganites of composition $\mathrm{P}{\mathrm{r}}_{1-\mathrm{x}}(\mathrm{C}{\mathrm{a}}_{1-\mathrm{y}}\mathrm{S}{\mathrm{r}}_{\mathrm{y}}{)}_{\mathrm{x}}\mathrm{Mn}{\mathrm{O}}_3$ exhibit persistent photoconductivity upon exposure to x-rays. This is not always accompanied by a s…