Matches in SemOpenAlex for { <https://semopenalex.org/work/W2766885851> ?p ?o ?g. }
- W2766885851 abstract "The recent discovery of ``polar metals'' with ferroelectriclike displacements offers the promise of designing ferroelectrics with tunable energy gaps by inducing controlled metal-insulator transitions. Here we employ first-principles calculations to design a metallic polar superlattice from nonpolar metal components and show that controlled intermixing can lead to a true insulating ferroelectric with a tunable band gap. We consider a $2/2$ superlattice made of two centrosymmetric metallic oxides, ${mathrm{La}}_{0.75}{mathrm{Sr}}_{0.25}{mathrm{MnO}}_{3}$ and ${mathrm{LaNiO}}_{3}$, and show that ferroelectriclike displacements are induced. The ferroelectriclike distortion is found to be strongly dependent on the carrier concentration (Sr content). Further, we show that a metal-to-insulator (MI) transition is feasible in this system via disproportionation of the Ni sites. Such a disproportionation and, hence, a MI transition can be driven by intermixing of transition metal ions between Mn and Ni layers. As a result, the energy gap of the resulting ferroelectric can be tuned by varying the degree of intermixing in the experimental fabrication method." @default.
- W2766885851 created "2017-11-10" @default.
- W2766885851 creator A5045566500 @default.
- W2766885851 creator A5074671329 @default.
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- W2766885851 date "2017-10-25" @default.
- W2766885851 modified "2023-10-17" @default.
- W2766885851 title "Engineering an Insulating Ferroelectric Superlattice with a Tunable Band Gap from Metallic Components" @default.
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- W2766885851 doi "https://doi.org/10.1103/physrevlett.119.177603" @default.
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