(LaCrO) /SrCrO superlattices as transparent p-type semiconductors with finite magnetization.

The electronic and magnetic properties of (LaCrO) /SrCrO superlattices are investigated using first principles calculations. We show that the magnetic moments in the two CrO layers sandwiching the SrO layer compensate each other for even but give rise to a finite magnetization for odd , which is explained by charge ordering with Cr and Cr ions arranged in a checkerboard pattern. The Cr ions induce in-gap hole states at the interface, implying that the transparent superlattices are p-type semiconductors. The availability of transparent p-type semiconductors with finite magnetization enables the fabrication of transparent magnetic diodes and transistors, for example, with a multitude of potential technological applications.