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Shape induced anomalies in vortex pinning and dynamics of superconducting antidot arrays with spherical cavities

Shape induced anomalies in vortex pinning and dynamics of superconducting antidot arrays with spherical cavities
Shape induced anomalies in vortex pinning and dynamics of superconducting antidot arrays with spherical cavities
Using electrochemical deposition of Pb in the pores of templates prepared by self-assembly from colloidal suspensions of polystyrene latex spheres, well ordered superconducting antidot arrays with spherically shaped holes are fabricated. In contrast to conventional lithographic arrays the samples with spherical cavities demonstrate significantly reduced pinning strength favoring the formation of commensurate states. The ac-flux penetration acquires a hybrid intra- and intervalley regime. For high ac drives an unusual inversion to paramagnetic ac shielding is found at commensurate states.
films, vortices, lattices, dots
0003-6951
1-3
Filby, E.T.
5dee4554-648b-428a-bd96-d1b8626b3494
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Ghanem, M.A.
f256d3b0-8767-4c1b-919d-2c9582102162
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Metlushko, V.V.
ab23ba1e-f493-4e59-a671-e9dbcf4d8b74
Filby, E.T.
5dee4554-648b-428a-bd96-d1b8626b3494
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Ghanem, M.A.
f256d3b0-8767-4c1b-919d-2c9582102162
Bartlett, P.N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Metlushko, V.V.
ab23ba1e-f493-4e59-a671-e9dbcf4d8b74

Filby, E.T., Zhukov, A.A., de Groot, P.A.J., Ghanem, M.A., Bartlett, P.N. and Metlushko, V.V. (2006) Shape induced anomalies in vortex pinning and dynamics of superconducting antidot arrays with spherical cavities. Applied Physics Letters, 89 (9), 1-3. (doi:10.1063/1.2339047).

Record type: Article

Abstract

Using electrochemical deposition of Pb in the pores of templates prepared by self-assembly from colloidal suspensions of polystyrene latex spheres, well ordered superconducting antidot arrays with spherically shaped holes are fabricated. In contrast to conventional lithographic arrays the samples with spherical cavities demonstrate significantly reduced pinning strength favoring the formation of commensurate states. The ac-flux penetration acquires a hybrid intra- and intervalley regime. For high ac drives an unusual inversion to paramagnetic ac shielding is found at commensurate states.

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More information

Published date: 2006
Keywords: films, vortices, lattices, dots

Identifiers

Local EPrints ID: 44439
URI: http://eprints.soton.ac.uk/id/eprint/44439
ISSN: 0003-6951
PURE UUID: 2024d47e-6af6-49eb-a3e3-a74366f167d8
ORCID for P.N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 02 Mar 2007
Last modified: 10 Dec 2019 01:56

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