Extended Data Fig. 3: Effects of spin-coupling mechanisms.
From: Nagaoka ferromagnetism observed in a quantum dot plaquette
Calculated spectra of the system in the region of pε close to the level crossing of the s = 1/2 and s = 3/2 energies, comparing the effects of different mechanisms for spin coupling. a, Spectrum without any spin coupling effects. b, Spectrum including only spin–orbit coupling (SOC) effects. c, Sample spectrum with both spin–orbit and hyperfine induced Overhauser field gradients, using a single combination of hNa fields (as defined in the Supplementary Methods) selected from a normal distribution with standard deviation δN = 73 neV. The Supplementary Methods describe the implementations of these spin-coupling terms in the theoretical model.
