Nature Communications (Feb 2016)
Giant conductivity switching of LaAlO3/SrTiO3 heterointerfaces governed by surface protonation
Abstract
The interface between two oxide materials can play host to numerous exotic phenomenon. Here, the authors observe a four order of magnitude change in the conductance at a lanthanum-aluminate–strontium-titanate interface controlled by surface protonation, which can be reversed by exposure to light.