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Optimization of solitons ratchets in inhomogeneous sine-Gordon systems

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dc.affiliation.dptoUC3M. Departamento de Matemáticases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Interdisciplinar de Sistemas Complejos (GISC)es
dc.contributor.authorMertens, Franz G.
dc.contributor.authorMorales-Molina, Luis
dc.contributor.authorBishop, Alan R.
dc.contributor.authorSánchez, Angel
dc.contributor.authorMüller, Patrick
dc.date.accessioned2012-09-03T11:02:21Z
dc.date.available2012-09-03T11:02:21Z
dc.date.issued2006-12
dc.description.abstractUnidirectional motion of solitons can take place, although the applied force has zero average in time, when the spatial symmetry is broken by introducing a potential V x , which consists of periodically repeated cells with each cell containing an asymmetric array of strongly localized inhomogeneities at positions xi. A collective coordinate approach shows that the positions, heights, and widths of the inhomogeneities in that order are the crucial parameters so as to obtain an optimal effective potential Uopt that yields a maximal average soliton velocity. Uopt essentially exhibits two features: double peaks consisting of a positive and a negative peak, and long flat regions between the double peaks. Such a potential can be obtained by choosing inhomogeneities with opposite signs e.g., microresistors and microshorts in the case of long Josephson junctions that are positioned close to each other, while the distance between each peak pair is rather large. These results of the collective variable theory are confirmed by full simulations for the inhomogeneous sine-Gordon system.es
dc.description.sponsorshipTravel between Spain and Germany was supported by the Ministerio de Educación y Ciencia (Spain) and DAAD (Germany) through “Acciones Integradas Hispano-Alemanas” Grants No. HA2004-0034 and No. D/04/3997. A.S. is supported by the Ministerio de Educación y Ciencia (Spain) under Grants No. FIS2004- 1001 and No. NAN2004-9087-C03-03, and by Comunidad de Madrid (Spain) under Grants No. UC3M-FI-05-007 and No. SIMUMAT-CM.es
dc.description.statusPublicadoes
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationPhysical Review E, vol. 74, n. 6, dec. 2006. Pp. 1-8es
dc.identifier.doi10.1103/PhysRevE.74.066602
dc.identifier.issn1539-3755 (print version)
dc.identifier.issn1550-2376 (online version)
dc.identifier.urihttps://hdl.handle.net/10016/15171
dc.language.isoenges
dc.publisherAmerican Physical Societyes
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevE.74.066602
dc.rights.accessRightsopen accesses
dc.subject.ecienciaMatemáticases
dc.titleOptimization of solitons ratchets in inhomogeneous sine-Gordon systemses
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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