Cellular automata model for persistent photoconductivity in YBCO

We feel that persistent photoconductivity has lacked an adequate microscopi c model to date. In an effort to remedy this, we present a cellular automat a model based on the idea that trapped electrons in the basal plane lead to structural rearrangements when illuminated with light ranging from IR-UV w avelengths. We interpret our results within a single-band model for the ele ctronic structure of YBCO and find that our results are in good agreement w ith previous experimental work.