A persistent photoinduced metal-to-insulator transition has been confirmed in a manganite thin film, Pr0.55(Ca0.75Sr0.25)0.45MnO3, near a multicritical point by monitoring with transport measurements and x-ray photoemission spectroscopy. Together with the previously reported reverse effect, the photoinduced insulator-to-metal transition, it is found that the relative stability of the metallic and insulating phases interchanges around 80 K in the middle of a very wide hysteresis loop, which is a manifestation of the large potential barrier due to the long-range elastic energy. It is shown that photons are much more effective in overcoming the barrier via the electronically excited intermediate states than via the heat mode.
ASJC Scopus subject areas
- Physics and Astronomy(all)