Il'in, K; Rall, D; Siegel, M; Engel, A; Schilling, A; Semenov, A; Huebers, H W (2010). Influence of thickness, width and temperature on critical current density of Nb thin film structures. Physica C: Superconductivity, 470(19):953-956.
The density of critical currents jC in Nb thin films with thickness smaller than 15 nm and width between 100 nm and 10 μm has been measured in a wide temperature range. We have found that the temperature dependencies of jC in sub-micrometer wide bridges at 0.7TC < T < TC are well described by the Ginzburg–Landau de-pairing critical current. In wider bridges already at T < 0.9TC the jC value is significantly reduced due to the penetration and de-pinning of magnetic vortices.
The density of critical currents jC in Nb thin films with thickness smaller than 15 nm and width between 100 nm and 10 μm has been measured in a wide temperature range. We have found that the temperature dependencies of jC in sub-micrometer wide bridges at 0.7TC < T < TC are well described by the Ginzburg–Landau de-pairing critical current. In wider bridges already at T < 0.9TC the jC value is significantly reduced due to the penetration and de-pinning of magnetic vortices.
| Item Type: | Journal Article, refereed, original work |
|---|---|
| Communities & Collections: | 07 Faculty of Science > Physics Institute |
| Dewey Decimal Classification: | 530 Physics |
| Scopus Subject Areas: | Physical Sciences > Electronic, Optical and Magnetic Materials
Physical Sciences > Condensed Matter Physics Physical Sciences > Energy Engineering and Power Technology Physical Sciences > Electrical and Electronic Engineering |
| Language: | English |
| Date: | 2010 |
| Deposited On: | 13 Feb 2011 18:55 |
| Last Modified: | 23 Jan 2022 17:55 |
| Publisher: | Elsevier |
| ISSN: | 0921-4534 |
| OA Status: | Closed |
| Publisher DOI: | https://doi.org/10.1016/j.physc.2010.02.042 |
Il'in, K