![Kent Graphic](/sites/default/files/styles/965x543/public/2021-12/KENT_qmcpack_highlight_01.png?itok=WFhyC0NQ)
Diffusion Monte Carlo spin density difference between bulks of potassium-doped nickel oxide and pure nickel oxide, showing the effects of substituting a potassium atom (center atom) for a nickel atom on the spin density of the bulk.
Image credit: Anouar Benali, Olle Heinonen, Joseph A. Insley, and Hyeondeok Shin, Argonne National Laboratory