Superconducting phase boundary of aperiodic networks in a magnetic field

A. Behrooz, M. J. Burns, D. Levine, B. Whitehead, P. M. Chaikin

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have used electron-beam lithography to fabricate superconducting wire arrays in a variety of patterns ranging from periodic to random and including the intermediate quasicrystalline and incommensurate configurations. Sweeping an applied magnetic field while observing the critical temperature reveals which fields are favorable or commensurate with the pattern. We find sharp dips in the Tc(H) curve for periodic, incommensurate (quasiperiodic), and quasicrystalline arrays reflecting a lock-in of the flux lattice with the underlying network. We find no similar fine structure for random arrays. This allows us to generalize the concept of commensurability to nonperiodic structures.

    Original languageEnglish (US)
    Pages (from-to)8396-8404
    Number of pages9
    JournalPhysical Review B
    Volume35
    Issue number16
    DOIs
    StatePublished - 1987

    ASJC Scopus subject areas

    • Condensed Matter Physics

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