Extended Data Fig. 7: Doublon Density versus Doping.
From: Directly imaging spin polarons in a kinetically frustrated Hubbard system
Number of measured doubles (red points) and theoretical expected number of doubles from DQMC (red band) with imaging fidelity of 0.96 accounted for at U/t = 11.8(4), T/t = 0.94(4). The highest doping bin (δ = 0.15) has around 20 percent more, the second highest doping bin (δ = 0.12 has around 10 percent more, and the third highest doping bin (δ = 0.08) has around 5 percent more doubles than predicted. We believe this is caused by image reconstruction errors and leads to a systematic underestimate of certain three and four point correlators above zero doping. This qualitative trend appears for all three interaction strengths. Error bars are 1 s.e.m.
