Fig. 2: Static snapshot of 2DMG.
From: Two-dimensional magnetic monopole gas in an oxide heterostructure

a a 2D illustration of a static snapshot of a 2DMG in a spin ice R2Ti2O7 slab sandwiched between two antiferromagnetic R2Ir2O7 slabs with the boundary moments terminated to be pointing toward the R2Ti2O7 slab. The tetrahedral sites with magnetic charge Q = 0 are in gray, Q = qm in green, Q = 2qm in blue, and Q = −2qm in red. b A depth profile of the monopole distribution taken from the average of snapshots, and c an example of the snapshot of monopole distribution from the ground states in the Monte Carlo results of a R2Ir2O7/R2Ti2O7/R2Ir2O7 sandwich with the nearest neighbor model and a parameter with 6Jdf/Jeff = 14.