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We have observed multiple magnetic field driven superconductor to insulatortransitions (SIT) in amorphous Bi films perforated with a nano-honeycomb (NHC)array of holes. The period of the magneto-resistance, H=H_M=h/2eS where S isthe area of a unit cell of holes, indicates the field driven transitions areboson dominated. The field-dependent resistance followsR(T)=R_0(H)exp(T_0(H)/T) on both sides of the transition so that the evolutionbetween these states is controlled by the vanishing of T_0 to0. We compare ourresults to the thickness driven transition in NHC films and the field driventransitions in unpatterned Bi films, other materials, and Josephson junctionarrays. Our results suggest a structural source for similar behavior found insome materials and that despite the clear bosonic nature of the SITs,quasiparticle degrees of freedom likely also play an important part in theevolution of the SIT.

Field Tuned Superconductor to Insulator Transitions in an Amorphous Film with an Imposed Multiply Connected Geometry