Dynamical instability of the electric transport in superconductors
Journal Article
·
· Scientific Reports
- Peking Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation)
- Russian Academy of Sciences (RAS), Novosibirsk (Russian Federation); Novosibirsk State Univ. (Russian Federation)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- National Chiao Tung Univ., Hsinchu (China); Bar-Ilan Univ., Ramat-Gan (Israel)
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-Thou less (BKT) transition that we have detected by transport measurements of titanium nitride (TiN) films. Our theoretical findings compare favorably with our experimental results.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NSFC); Russian Science Foundation; USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1476650
- Journal Information:
- Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 8; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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