Abstract
We had epitaxially grown La0.9Sr0.1MnO3 (LSMO) thin films on ferroelectric 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (PMN-PT) single-crystal substrates. The electric-field controls of transport and photoinduced resistance (PR) changes were observed in LSMO films. The variations of PR under different electric fields applied to the LSMO/PMN-PT structure were quite different when PMN-PT was in positively and negatively polarized states, which can be attributed to the coaction of both electric-field–induced lattice strain effect and ferroelectric polarization effect. These results provide us another route to see the nature of modulating the properties of manganite films by external electric fields.
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