Persistent Photoinduced Effects in High - T , Superconductors
نویسندگان
چکیده
The field of superconductivity has gained much attention in recent years due to the discovery of the high temperature cuprate superconductors. Besides their high transition temperature (T,s up to = 160 K), they show a variety of physical properties that are remarkably different from those of conventional superconductors. Two of these are persistent photoconductivity (PPC) and persistent photoinduced superconductivity (PPS), which we review in this article. The cuprate superconductors are layered materials that consist of CuOz planes sandwiched between "charge reservoirs" (see Fig. l), e.g., the CuO chain layers in
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