2017/07/27 by Ankit S. Disa, Alexandru B. Georgescu, James L. Hart +8
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Electronic and Structural Properties of Oxides #Limit (mathematics) #Magnetic and transport properties of perovskites and related materials #Metal #Order (exchange) #Phase (matter) #Phase control #Phase transition #Superlattice #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevmaterials.1.024410
published as Phys. Rev. Materials 1, 024410 (2017) · 30 pages, 13 figures
openalex publication_date 2017/07/27 · openalex created_date 2017/08/08 · arxiv created 2018/09/20 · arxiv updated 2018/09/24 · openalex updated_date 2026/08/06
The fascinating behavior of transition metal oxides can change dramatically when they are scaled down to atomic-size dimensions; however, understanding the emergent properties is a major challenge. In this paper, the authors observe the evolution of multiple phase transitions as the thickness is reduced from bulk to the atomic layer limit in NdNiO3 superlattices. Their measurements demonstrate a separation of the insulating phase from magnetic and charge-ordered phases, which coexist in the bulk, and the emergence of a hidden, unordered insulating phase for a single atomic layer. Modeling shows that the phase manipulation uniquely takes advantage of the effects of 2D confinement and symmetry-breaking at the interface.