Determination of the Superconductor-Insulator Phase Diagram for One-Dimensional Wires
arXiv:0707.4532 · doi:10.1103/PhysRevLett.101.227003
Abstract
We establish the superconductor-insulator phase diagram for quasi-one dimensional wires by measuring a large set of MoGe nanowires. This diagram is consistent with the Chakravarty-Schmid-Bulgadaev phase boundary, namely with the critical resistance being equal to R_Q = h/4e^2. We find that transport properties of insulating nanowires exhibit a weak Coulomb blockade behavior.
5 pages, 4 figures