Dissipation in quasi-one-dimensional superconducting single-crystal Sn nanowires
By M. Tian, Jinguo Wang, J. Kurtz, Y. Liu, M. Y. Chan, T. Mayer, T. Mallouk. 2005
143 citations recorded by the source corpus.
Electrical transport measurements were made on single-crystal $\mathrm{Sn}$ nanowires to understand the intrinsic dissipation mechanisms of a one-dimensional superconductor. While the resistance of wires of diameter larger than $70\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ drops precipitously to zero at ${T}_{c}$ near $3.7\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, a residual resistive tail extending down to low temperature is found for wires with diameters of 20 and $40\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$. 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 ${T}_{c}$ and the other extending down to at least $0.47\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the minimum temperature of the measurements. The residual resistance is found to be ohmic at all temperatures below ${T}_{c}$ of $\mathrm{Sn}$. These findings are suggestive of a thermally activated phase slip process near ${T}_{c}$ and quantum fluctuation-induced phase slip process in the low-temperature regime. When the excitation current exceeds a critical value, the voltage-current $(V\text{\ensuremath{-}}I)$ characteristics show a series of discrete steps in approaching the normal state.
Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/3da22a0e0bcffb1787fe5006181b1ed304aea581
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
Citations in the corpus
- Interplay between superconductivity and ferromagnetism in crystalline nanowires (2010, methodology): “8 K is comparable to that observed in single-crystal 40-nm-diameter superconducting Sn nanowire”