Demagnetizing effects on the critical state in Josephson-junction arrays

D. X. Chen, J. J. Moreno, A. Hernando, A. Sanchez

Research output: Contribution to journalArticleResearchpeer-review


It is known that in infinitely long Josephson-junction (JJ) arrays, a perfect critical state occurs at a sufficiently large maximum JJ current density imax* and the corresponding critical current density ic* is a step function of imax*. In this work, we demonstrate by numerical calculations that a critical state can also occur in striplike JJ arrays with strong demagnetizing effects if the maximum JJ current imax is sufficiently large. However, in the striplike arrays the critical state is never perfect, with field and current profiles always containing an oscillating component. The critical current ic tends asymptotically to a linear function of imax.
Original languageEnglish
Pages (from-to)2733-2734
JournalPhysica C: Superconductivity and its Applications
Volume341-348 (IV)
Publication statusPublished - 1 Jan 2000


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