Supporting data from: Transport phase diagram and anomalous metallicity in superconducting infinite-layer nickelates

Despite obvious similarities in their electronic and crystallographic
structures, it remains unclear whether the interactions that
shape the normal and superconducting (SC) state properties of
high-Tc cuprates and infinite-layer nickelates (ILNs) have the
same origin. This question has been brought into sharper focus with
recent studies on ILNs of improved crystallinity that reveal a SC
dome of comparable extent and similar transport properties above
Tc as the hole-doped cuprates. The evolution of these properties
in the magnetic-field-induced normal state, however, has yet to
be determined. Here, we examine the magnetotransport properties
of new-generation Nd1-xSrxNiO2 films in the T → 0 limit across
the phase diagram in fields up to 54 T. This extensive study reveals that
the limiting low-T form of the normal-state resistivity in ILNs exhibits
non-Fermi-liquid behaviour over an extended doping range inside the SC
dome, rather than at a singular quantum critical point. While there are
clear differences in the charge dynamics of ILNs and cuprates, most
notably in the magnetoresistance, our findings reveal that both systems
exhibit anomalous metallicity characteristic of a quantum critical phase.