Physics – Condensed Matter – Superconductivity
Scientific paper
2004-01-19
Physics
Condensed Matter
Superconductivity
4 pages, 4 figures, 1 table
Scientific paper
10.1103/PhysRevB.69.180503
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 a mixed behavior, such that signatures of the superconducting and insulating regimes can be observed in the same sample. The resistance versus temperature curves of inhomogeneous wires show multiple steps, each corresponding to a weak link constriction (WLC) present in the wire. Similarly, each WLC generates a differential resistance peak when the bias current reaches the critical current of the WLC. Due to the presence of WLCs an inhomogeneous wire splits into a sequence of weakly interacting segments where each segment can act as a superconductor or as an insulator. Thus the entire wire then shows a mixed behavior.
Bezryadin Alexey
Bollinger A. T.
Remeika Mikas
Rogachev Alexander
No associations
LandOfFree
The effect of morphology on the superconductor-insulator transition in 1-D nanowires does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The effect of morphology on the superconductor-insulator transition in 1-D nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The effect of morphology on the superconductor-insulator transition in 1-D nanowires will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-392285