Dynamical instability of the electric transport in superconductors

Lei Qiao, Dingping Li, Svetlana V. Postolova, Alexey Yu Mironov*, Valerii Vinokur, Rosenstein Baruch

*Corresponding author for this work

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

We develop a nonlinear theory of the electronic transport in superconductors in the framework of the time-dependent Ginzburg-Landau (TDGL) equation. We utilize self-consistent Gaussian approximation and reveal the conditions under which the current-voltage V(I) dependence (I–V characteristics) acquires an S-shape form leading to switching instabilities. We demonstrate that in two-dimensions the emergence of such an instability is a hallmark of the Berezinskii-Kosterlitz-Thouless (BKT) transition that we have detected by transport measurements of titanium nitride (TiN) films. Our theoretical findings compare favorably with our experimental results.

原文English
文章編號14104
期刊Scientific reports
8
發行號1
DOIs
出版狀態Published - 1 十二月 2018

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