Switching behavior of epitaxial perovskite manganite thin films

Abstract

We have observed electric-field-induced and photoinduced switching from insulating to conducting state in stressed epitaxial Sm0.5Sr0.5MnO3 thin films fabricated by pulsed-laser deposition. Previously known only in bulk crystals of perovskite manganese oxides, the switching behavior in thin film form is more significant for potential practical utility of the strongly correlated electron systems including optical devices.