Effect of morphology on the superconductor-insulator transition in one-dimensional nanowires
Effect of morphology on the superconductor-insulator transition in one-dimensional nanowires
We study the effect of morphology on the low temperature behavior of superconducting nanowires of length $\approx$100 nm. A well-defined superconductor-insulator transition (SIT) is observed only in homogenous wires, in which case the transition occurs when the normal resistance is close to $h/4e^2$. Inhomogeneous wires, on the other hand, exhibit …