Room Temperature Electrostatic Across the Interface in Nanostructured ZnO/La $_{0.7}$ Sr $_{0.3}$ MnO

PLD grown ZnO/La_0.7Sr_0.3MnO₃/SrTi_0.998Nb_0.002O₃ nanostructured heterostructure has been studied for its nanoelectronic properties at room temperature under zero applied field. XRD φ-scan reveals the epitaxial growth of La_0.7Sr_0.3MnO₃ (LSMO) film, while the transport of 10-nm LSMO manganite layer can be tuned with applied electric field using various field effect configurations. 10-nm LSMO layer shows a large change in resistance with the application of voltage, i.e., exhibiting colossal electroresistance (CER) ~100% (negative) and large positive electroresistance (ER) ~2683% under 4.5 V at room temperature. The variation scenario in 10-nm LSMO transport has been discussed on the basis of electric-field-induced modifications in the charge carrier density and electronic states.