Enhanced persistent photoconductivity in $\delta$-doped LaAlO${}_3$/SrTiO${}_3$ heterostructures

A. Rastogi, J. J. Pulikkotil, R. C. Budhani

We report the effect of $\delta$-doping at LaAlO${}_3$/SrTiO${}_3$ interface with LaMnO${}_3$ monolayers on the photoconducting (PC) state. The PC is realized by exposing the samples to…