Infrared Nanoimaging of Hydrogenated Perovskite Nickelate Memristive Devices.

ABSTRACT: Solid-state devices made from correlated oxides, such as perovskite nickelates, are promising for neuromorphic computing by mimicking biological synaptic function. However, comprehending dopant action at the nanoscale poses a formidable challenge to understanding the elementary mechanisms involved. Here, we perform operando infrared nanoimaging of hydrogen-doped correlated perovskite, neodymium nickel oxide (H-NdNiO₃, H-NNO), devices and reveal how an applied field perturbs dopant distribution at the nanoscale. This perturbation leads to stripe phases of varying conductivity perpendicular to the applied field, which define the macroscale electrical characteristics of the devices. Hyperspectral nano-FTIR imaging in conjunction with density functional theory calculations un

SUBMITTER: Gamage S 

PROVIDER: S-EPMC10811663 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature