An atomically controlled insulator-to-metal transition in iridate/manganite heterostructures.

ABSTRACT: All-insulator heterostructures with an emerging metallicity are at the forefront of material science, which typically contain at least one band insulator while it is not necessary to be. Here we show emergent phenomena in a series of all-correlated-insulator heterostructures that composed of insulating CaIrO₃ and insulating La_0.67Sr_0.33MnO₃. We observed an intriguing insulator-to-metal transition, that depends delicately on the thickness of the iridate component. The simultaneous enhancements of magnetization, electric conductivity, and magnetoresistance effect indicate a percolation-type nature of the insulator-to-metal transition, with the percolation threshold can be reached at an exceptionally low volume fraction of the iridate. Such a drasti

SUBMITTER: Men E 

PROVIDER: S-EPMC11439077 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature