Layer selective control of the lattice structure in oxide superlattices

Abstract

A combined synchrotron X-ray diffraction and transmission electron microscopy study reveals a structural phase transition controlled by the overall thickness of epitaxial nickelate-aluminate superlattices. The transition between uniform and twin-domain states is confined to the nickelate layers and leaves the aluminate layers unaffected.

Keywords: X-ray diffraction; crystal structure; nickelates; superlattices; transition-metal-oxide heterostructures.