Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1818792 | Physica C: Superconductivity and its Applications | 2010 | 5 Pages |
Abstract
Superconducting Pb(x)/Au(25 nm) bilayers (x = 50, 100 nm) patterned with antidot lattices exhibit various matching field anomalies depending on experimental conditions. Magnetization peaks at applied fields H = n[20 Oe] (n = integer) resemble superconducting wire network data; cusps are also observed, consistent with predictions of “giant” vortices in low-kappa films. Sharp “staircase” anomalies spaced by 1-3 Oe are observed in AC magnetization, possibly a result of depinning of intermediate state domains, or macroscopic quantum tunneling between reproducible states of different quantized flux.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Lance E. De Long, S.A. Kryukov, V. Bhat, V.V. Metlushko, M.J.A. Stoutimore, D.J. Van Harlingen,