Characterizing the Josephson Effect on Ba-122 Single-Crystal Junctions
- Physikalisch-Technische Bundesanstalt (PTB) (Germany)
- Friedrich-Schiller-University Jena, Institute of Solid State Physics (Germany)
- Karlsruhe Institute of Technology, Institute of Solid State Physics (Germany)
This paper presents c-direction hybrid Josephson junctions with base electrodes of Co:BaFe{sub 2}As{sub 2} single crystals. To realize Josephson junctions, it applies standard photolithography technologies and a newly developed surface polishing method that was used. As conventional isotropic s-wave superconductor counter electrodes used double layers of Pb/In. The artificial barrier for the tunneling junctions consists of a thin sputtered Ti layer or a thermally evaporated Al layer; both layers were used as an insulator barrier. For characterizing the Josephson effects with TiO{sub x} barrier, we could realize I{sub c}R{sub N} products of about 13.7 μV and unconventional I{sub c}-T dependencies. The formation of Shapiro steps under the influence of microwave irradiation and magnetic field to the junctions will be discussed as well.
- OSTI ID:
- 22922892
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 9 Vol. 32; ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARSENIC COMPOUNDS
BARIUM COMPOUNDS
COBALT ADDITIONS
CRITICAL CURRENT
DOPED MATERIALS
IRON COMPOUNDS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
LAYERS
MAGNETIC FIELDS
MICROWAVE RADIATION
MONOCRYSTALS
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TUNNEL EFFECT