Back to Search
Start Over
Unconventional Temperature-Dependent Critical Current in the Fe-Based Hybrid Josephson Junction with a Metallic Barrier.
- Source :
-
Journal of Low Temperature Physics . Oct2023, Vol. 213 Issue 1/2, p70-79. 10p. - Publication Year :
- 2023
-
Abstract
- We use the multiband Fe-based superconductor (FeSC) Ba0.5K0.5Fe2As2 and the conventional superconductor Nb to fabricate a hybrid Josephson junction where an Al layer serves as a highly transparent barrier. Detailed electrical transportations are studied including the Shapiro steps and the Fraunhofer-like pattern, which indicate strong Josephson effects. An unusual temperature-dependent critical current was observed, which cannot be well described by the conventional Ambegaokar–Baratoff relation. We utilize a model considering both multiband properties in the FeSC and the conventional superconductor/normal metal/superconductor Josephson junction theory, proving that this temperature dependence on critical current is attributed to the barrier transparency of the Josephson junction. We hope our studies can be a reference for the applications or physics research of FeSC Josephson junctions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222291
- Volume :
- 213
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Low Temperature Physics
- Publication Type :
- Academic Journal
- Accession number :
- 171345611
- Full Text :
- https://doi.org/10.1007/s10909-023-02984-0