2018/03/10 by S. Middey, D. Meyers, M. Kareev +10
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Computer science #Earth science #Geology #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #Rare earth #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.120.156801
published as Phys. Rev. Lett, 120, 156801 (2018) · Accepted in Phys. Rev. Lett
arxiv created 2018/03/10 · openalex publication_date 2018/04/09 · arxiv updated 2018/04/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Coupled transitions between distinct ordered phases are important aspects behind the rich phase complexity of correlated oxides that hinder our understanding of the underlying phenomena. For this reason, fundamental control over complex transitions has become a leading motivation of the designer approach to materials. We have devised a series of new superlattices by combining a Mott insulator and a correlated metal to form ultrashort period superlattices, which allow one to disentangle the simultaneous orderings in RENiO3. Tailoring an incommensurate heterostructure period relative to the bulk charge ordering pattern suppresses the charge order transition while preserving metal-insulator and antiferromagnetic transitions. Such selective decoupling of the entangled phases resolves the long-standing puzzle about the driving force behind the metal-insulator transition and points to the site-selective Mott transition as the operative mechanism. This designer approach emphasizes the potential of heterointerfaces for selective control of simultaneous transitions in complex materials with entwined broken symmetries.