Supplementary material: Quantifying inhomogeneous magnetic fields at the micron scale using Graphene Hall-Effect sensors

The readers will find additional figures showing the influence of the energy discretization on the calculation of the GHS longitudinal and Hall resistance as well as figures showing the position dependence of the Hall coefficient for different Hall cross geometry. A figure showing the evolution of the stray magnetic field of the iron nanocube for different position on its magnetic hysteresis loop is also present.