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Author | Bothner, D.; Seidl, R.; Misko, V.R.; Kleiner, R.; Koelle, D.; Kemmler, M. | ||||
Title | Unusual commensurability effects in quasiperiodic pinning arrays induced by local inhomogeneities of the pinning site density | Type | A1 Journal article | ||
Year | 2014 | Publication | Superconductor science and technology | Abbreviated Journal | Supercond Sci Tech |
Volume | 27 | Issue | 6 | Pages | 065002 |
Keywords | A1 Journal article; Condensed Matter Theory (CMT) | ||||
Abstract | We experimentally investigate the magnetic field dependence of the critical current I-c(B) of superconducting niobium thin films patterned with periodic and quasiperiodic antidot arrays on the submicron scale. For this purpose we monitor current-voltage characteristics at different values of B and temperature T. We investigate samples with antidots positioned at the vertices of two different tilings with quasiperiodic symmetry, namely the Shield Tiling and the Tuebingen Triangle Tiling. For reference we investigate a sample with a triangular antidot lattice. We find modulations of the critical current for both quasiperiodic tilings, which have partly been predicted by numerical simulations but not observed in experiments yet. The particularity of these commensurability effects is that they correspond to magnetic field values slightly above an integer multiple of the matching field. The observed matching effects can be explained by the caging of interstitial vortices in quasiperiodically distributed cages and the formation of symmetry-induced giant vortices. | ||||
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Corporate Author | Thesis | ||||
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Place of Publication | Bristol | Editor | ||
Language | Wos | 000336494900003 | Publication Date | 2014-04-03 | |
Series Editor | Series Title | Abbreviated Series Title | |||
Series Volume | Series Issue | Edition | |||
ISSN | 0953-2048;1361-6668; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 2.878 | Times cited | 7 | Open Access | |
Notes | ; This work has been supported by the European Research Council via SOCATHES and by the Deutsche Forschungsgemeinschaft via the SFB/TRR 21. DB gratefully acknowledges support by the Evangelisches Studienwerk e.V. Villigst. MK gratefully acknowledges support by the Carl-Zeiss Stiftung. VRM gratefully acknowledges support by the 'Odysseus' Program of the Flemish Government and the Flemish Science Foundation (FWO-VI). The authors thank Franco Nori for fruitful discussions on quasiperiodic pinning arrays. ; | Approved | Most recent IF: 2.878; 2014 IF: 2.325 | ||
Call Number | UA @ lucian @ c:irua:117763 | Serial | 3817 | ||
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