Three-dimensional imaging of oxygen dopant distribution in Sr$_2$CuO$_3+δ$ by electron ptychography

Kavli Affiliate: David Muller | Summary:Oxygen dopants play a critical role in tuning the properties of cuprate superconductors, yet it is challenging to visualize them at the atomic scale. Here, we use multislice electron ptychography to directly image oxygen dopants in a Sr2CuO3+delta film. We observe oxygen dopants at interstitial sites between the Cu-O chains, […]