Little-Parks oscillations in a single ring in the vicinity of the superconductor-insulator transition

  title={Little-Parks oscillations in a single ring in the vicinity of the superconductor-insulator transition},
  author={Doron Gurovich and Konstantin S. Tikhonov and Diana Mahalu and Dan Shahar},
  journal={Physical Review B},
We present results of measurements obtained from a mesoscopic ring of a highly disordered superconductor. Superimposed on a smooth magnetoresistance background we find periodic oscillations with a period that is independent of the strength of the magnetic field. The period of the oscillations is consistent with charge transport by Cooper pairs. The oscillations persist unabated for more than 90 periods, through the transition to the insulating phase, up to our highest field of 12 T. 

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