Observation of the parallel-magnetic-field-induced   superconductor-insulator transition in thin amorphous InO films
  We study the response of a thin superconducting amorphous InO film with variable oxygen content to a parallel magnetic field. A field-induced superconductor-insulator transition (SIT) is observed that is very similar to the one in normal magnetic fields. As the boson-vortex duality, which is the key-stone of the theory of the field-induced SIT, is obviously absent in the parallel configuration, we have to draw conclusion about the theory insufficiency. 
V.F.Gantmakher, M.V.Golubkov, V.T.Dolgopolov, A.A.Shashkin, and   G.E.Tsydynzhapov