Metal-insulator transition in a system of superconducting vortices caused by a metallic gate.
We address a recent experiment in which a strong decrease of the resistance of a superconducting film has been observed when a remote unbiased gate was placed above the film. Here we explain the experimental finding as a suppression of the vortex tunneling due to the orthogonality catastrophe of the electrons inside the gate. We interpret the change in the resistance of the film as a "metal-insulator" transition in the system of vortices induced by the gate.
Michaeli
K
K
Department of Condensed Matter Physics, The Weizmann Institute of Science, Rehovot 76100, Israel.
Finkel'stein
A M
AM