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Topology-induced critical current enhancement in Josephson networks |
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| Authors: | P Silvestrini R Russo V Corato B Ruggiero C Granata S Rombetto M Russo M Cirillo A Trombettoni P Sodano |
| Institution: | aDipartimento d'Ingegneria dell'Informazione, Seconda Università di Napoli, Aversa, Italy bIstituto di Cibernetica “E. Caianiello” del CNR, Pozzuoli, Italy cDipartimento di Fisica and INFM, Università di Roma “Tor Vergata”, 00173 Roma, Italy dInternational School for Advanced Studies and Sezione INFN, Via Beirut 2/4, 34104 Trieste, Italy eDipartimento di Fisica, Università di Perugia, 06123 Perugia, and Sezione INFN, Perugia, Italy fProgetto Lagrange, Fondazione C.R.T. e Fondazione I.S.I., Dipartimento di Fisica, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10124 Torino, Italy |
| Abstract: | We investigate the properties of Josephson junction networks with inhomogeneous architecture. The networks are shaped as “square comb” planar lattices on which Josephson junctions link superconducting islands arranged in the plane to generate the pertinent topology. Compared to the behavior of reference linear arrays, the temperature dependencies of the Josephson currents of the branches of the network exhibit relevant differences. The observed phenomena evidence new and surprising behavior of superconducting Josephson arrays. |
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