Disentangled cooperative orderings in artificial rare-earth nickelates

Abstract

Coupled transitions between distinct ordered phases are important aspects behind the rich phase complexity of correlated oxides that hinders 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 ultra-short period superlattices, which allow one to disentangle the simultaneous orderings in $RE$NiO${}_3$. 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.

arXiv commentAccepted in Phys. Rev. Lett

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Cited by in corpus (13)

• Epitaxial stabilization of ultra thin films of high entropy perovskite
• Mechanism and Control Parameters of the Coupled Structural and Metal-Insulator Transition in Nickelates
• Disentangling lattice and electronic contributions to the metal-insulator transition from bulk vs. layer confined RNiO${}_3$
• Confinement- and strain-induced enhancement of thermoelectric properties in LaNiO${}_3$/LaAlO${}_3(001)$ superlattices
• Distortion mode anomalies in bulk PrNiO${}_3$ illustrating the potential of symmetry-adapted distortion mode analysis for the study of phase transitions
• Anomalous electron transport in epitaxial NdNiO${}_3$ films
• Epitaxial strain modulated electronic properties of interface controlled nickelate superlattice
• Conductivity noise across temperature driven transitions of rare-earth nickelate heterostructures
• PERSPECTIVE: Emergent phases in rare earth nickelate heterostructures
• Coherent epitaxy of trilayer nickelate (Nd0.8Sr0.2)4Ni3O10 films by high-pressure magnetron sputtering
• Energy Landscape analysis of metal-insulator transitions: theory and application to Ca${}_2$RuO${}_4$, $R$NiO${}_3$ and their heterostructures
• Interfacial reconstruction effects in insulating double perovskite Nd${}_2$NiMnO${}_6$/SrTiO${}_3$ and Nd${}_2$NiMnO${}_6$/NdGaO${}_3$ thin films
• Probing electronic and magnetic transitions of short periodic nickelate superlattices using synchrotron x-ray