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| Home > Publications database > Transport Measurements on Arrays of Four-Terminal Nb-Pt-Nb Josephson Junctions |
| Home > Publications database > Transport Measurements on Arrays of Four-Terminal Nb-Pt-Nb Josephson Junctions |
| Conference Presentation (After Call) | FZJ-2026-01384 |
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2025
Abstract: Arrays of interconnected two-terminal Josephson junctions have been investigated since the 1980’s. Usually, the array is realized as a square lattice with four two-terminal Josephson junctions connected in a square unit cell. Recently, Graziano et al. [1] showed that a multi-terminal Josephson junction can be described as a network of interconnected two-terminal Josephson junctions. Based on that concept, we present an array made of 30×30 four-terminal Nb-Pt-Nb Josephson junctions. The in-situ fabrication of large networks of Josephson junctions, using molecular beam epitaxy, is described. For this process, a periodically patterned shadow mask of Si3N4 has been developed. The physical concept of a multi-terminal Josephson junction array is introduced. Its theoretical explanation is based on a lattice of interconnected two-terminal Josephson junctions, each described as a resistively-capacitively-shunted junction. Critical current and resistance of the array show oscillations connected to its unit cell.[1] G. V. Graziano et al., Phys. Rev. B 101, 054510 (2020).
Keyword(s): Information and Communication (1st) ; Condensed Matter Physics (2nd)
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