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Surface termination control of charge transfer and band alignment across a semiconductor–crystalline-oxide heterojunction
Charge redistribution across heterojunctions has long been utilized to induce functional response in materials systems. Here we examine how the composition of the terminating surface affects charge transfer across a heterojunction consisting of Si and the crystalline complex oxide $\mathrm{SrTi}{\mathrm{O}}_{3}$. Itinerant electrons in Si migrate across the interface toward the …