  Many experiments investigating magnetic field tuned superconductor-insulator
transition (H-SIT), often exhibit low-temperature resistance saturation, which
is interpreted as an anomalous metallic phase emerging from a "failed
superconductor," thus challenging conventional theory. Here we study a random
granular array of indium islands grown on a gateable layer of indium-oxide. By
tuning the intergrain couplings, we reveal a wide range of magnetic fields
where resistance saturation is observed, under conditions of careful
electromagnetic filtering and within a wide range of linear response. Exposure
to external broadband noise or microwave radiation is shown to strengthen the
tendency of superconductivity, where at low field a global superconducting
phase is restored. Increasing magnetic field unveils an "avoided H-SIT," that
exhibits granularity-induced logarithmic divergence of the
resistance/conductance above/below that transition, pointing to possible
vestiges of the original emergent duality observed in a true H-SIT. We conclude
that anomalous metallic phase is intimately associated with inherent
inhomogeneities, exhibiting robust behavior at attainable temperatures for
strongly granular two-dimensional systems.
