Physical Review Letters
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Frustrated Frustration of Arrays with Four-Terminal Nb-Pt-Nb Josephson Junctions
Author(s): Justus Teller, Christian Schäfer, Kristof Moors, Benjamin Bennemann, Matvey Lyatti, Florian Lentz, Detlev Grützmacher, Roman-Pascal Riwar, and Thomas Schäpers
We study the frustration pattern of a square lattice with in situ fabricated Nb-Pt-Nb four-terminal Josephson junctions. The four-terminal geometry gives rise to a checkerboard pattern of alternating fluxes $f$, ${f}^{′}$ piercing the plaquettes, which stabilizes the Berezinskii-Kosterlitz-Thouless … [Phys. Rev. Lett. 135, 156002] Published Thu Oct 09, 2025
