Superconducting phase boundary of aperiodic networks in a magnetic field
A. Behrooz, M. J. Burns, D. Levine, B. Whitehead, P. M. Chaikin
DOI 10.1103/PhysRevB.35.8396 · Physical Review B
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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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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