Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn Nanowires

Details Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn Nanowires Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn Nanowires

2005-02-03

arxiv.org/abs/cond-mat/0502111v1

Physics

Condensed Matter

Superconductivity

7 pages, 5 figures. To be appeared on Physical Review B 71, 2005

Scientific paper

10.1103/PhysRevB.71.104521

Electrical transport measurements were made on single-crystal Sn nanowires to understand the intrinsic dissipation mechanisms of a one-dimensional superconductor. While the resistance of wires of diameter larger than 70 nm drops precipitately to zero at Tc near 3.7 K, a residual resistive tail extending down to low temperature is found for wires with diameters of 20 and 40 nm. As a function of temperature, the logarithm of the residual resistance appears as two linear sections, one within a few tenths of a degree below Tc and the other extending down to at least 0.47 K, the minimum temperature of the measurements. The residual resistance is found to be ohmic at all temperatures below Tc of Sn. These findings are suggestive of a thermally activated phase slip process near Tc and quantum fluctuation-induced phase slip process in the low temperature regime. When the excitation current exceeds a critical value, the voltage-current (V-I) curves show a series of discrete steps in approaching the normal state. These steps cannot be fully understood with the classical Skocpol-Beasley-Tinkham phase slip center model (PSC), but can be qualitatively accounted for partly by the PSC model modified by Michotte et al.

Affiliated with

Also associated with

No associations

Rating

Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn 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 Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn Nanowires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dissipation in Quasi One-Dimensional Superconducting Single-Crystal Sn Nanowires will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-527746