Remarkable current-enhanced photoconductivity in oxygen-deficient La_7/8Sr_1/8MnO_3−δ thin film

Oxygen vacancies induced enhancement of photoconductivity of La0.5Sr0.5CoO3 −δthin film

“…One should point out that the CEPC effect observed in the LaSrCoO 3 − δ thin film cannot be connected to heat-induced effects due to the electrical current and light illumination. Hu et al estimated that a light illumination of 56.7 mW cm −2 and an electrical current of 20 μA will give a temperature rise of only about 0.5 K [14]. Therefore, the remarkable CEPC effect cannot be explained by such a minute heating effect.…”

“…It is well known that the oxygen content of LSCO is also an important factor that can strongly affect their physical properties such as the crystal structure as well as the electrical transport and magnetic properties [8][9][10][11][12]. However, although many studies have been reported on the photoinduced effects in the oxygen-deficient doped manganites and multiferroic BiFeO 3 films [13][14][15][16][17], also as transition metal perovskite oxides, few studies have been reported on the photoinduced effects in the oxygen-deficient lightly doped cobaltates. In this letter, we report studies of the photoconductivity and its current enhancement in oxygen-deficient La 0.5 Sr 0.5 CoO 3 − δ (LSCO 3 ) thin films.…”

Transport properties and anomalous fatigue effect of Ag/Bi0.9La0.1FeO3/La0.7Sr0.3MnO3heterostructures

“…It is well known that, when positively charged oxygen vacancies (V Os ) attract electrons, the V Os act as electron trapping centers. [27][28][29][30] Consider that, in both LRS and HRS, the barrier height of the BLFO/LSMO junction is always higher than that of the Ag/BLFO junction. [31] Thus, the current in the negative bias part is mainly limited by the Ag/BLFO interface.…”