Data for: Frustrated Frustration of Arrays with Four-Terminal Nb-Pt-Nb Josephson Junctionshttps://doi.org/10.26165/JUELICH-DATA/O3EAHVTeller, JustusSchäfer, ChristianMoors, KristofBennemann, BenjaminLyatti, MatveyLentz, FlorianGrützmacher, DetlevRiwar, Roman-PascalSchäpers, ThomasJülich DATA2025-07-042025-07-04T09:48:45ZData sets used for the figures in the manuscript. Abstract 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 checker board pattern of alternating fluxes f, f' piercing the plaquettes, which stabilizes the Berezinskii-Kosterlitz-Thouless transition even at irrational flux quanta per plaquette, due to an unequal repartition of integer flux sum f+f' into alternating plaquettes. This type of frustrated frustration manifests as a beating pattern of the dc resistance, with state configurations at the resistance dips gradually changing between the conventional zero-flux and half-flux states. Hence, the four-terminal Josephson junction array offers a promising platform to study previously unexplored flux and vortex configurations, and provides an estimate on the spatial expansion of the four-terminal Josephson junction central weak link area.PhysicsJosephson junction arrayfrustration patternmulti-terminal Josephson junctionSchäpers, Thomas2025-07-04CC0CC0 Waiver