Abstract
We microscopically study inter-grain Josephson currents in iron-pnictide superconductors. The theoretical examination predicts that the inter-grain Josephson current is significantly reduced by ±s-wave symmetry as the incoherent tunneling process becomes dominant and the density of states and the gap amplitude between two bands are identical. In addition, we suggest important points to improve the inter-grain critical current density.
| Original language | English |
|---|---|
| Pages (from-to) | S489-S490 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 470 |
| Issue number | SUPPL.1 |
| DOIs | |
| Publication status | Published - 2010 Dec 1 |
Keywords
- Inter-grain critical current
- Iron-pnictide superconductors
- Josephson junctions
- Multi-band superconductors
- ±s-Wave symmetry
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Cite this
Ota, Y., Machida, M., & Koyama, T. (2010). Inter-grain Josephson currents in two-gap superconductors. Physica C: Superconductivity and its applications, 470(SUPPL.1), S489-S490. https://doi.org/10.1016/j.physc.2009.11.016