New Universality Class at the Superconductor-Insulator Transition
New Universality Class at the Superconductor-Insulator Transition
We study transport properties of thin films near the superconductor-insulator transition. Formulated in a phase representation, the key new feature of our model is the assumption of a local Ohmic dissipative mechanism. Coarse graining leads to a Ginzburg-Landau description, with non-Ohmic dynamics for the order parameter. For strong enough damping …