Power law resistivity behavior in 2D superconductors across the   magnetic-field tuned superconductor-insulator transition
  We present the results of a systematic study of thin-films of amorphous indium-oxide near the superconductor-insulator transition. We show that the film's resistivity follows a simple, well-defined, power-law dependence on the perpendicular magnetic field. This dependence holds well into the insulating state. Our results indicate that vortices play a central role in the transport of our films in the superconducting as well as insulating phases. 
G. Sambandamurthy, A. Johansson, E. Peled, D. Shahar, P. G. Bjornsson   and K. A. Moler