Friedel transition in a modified XY model

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dc.creatorDzierzawa, M.
dc.creatorZamora, M.
dc.creatorBaeriswyl, D.
dc.creatorBagnoud, X.
dc.date1996-04-04
dc.date.accessioned2026-07-07T03:08:29Z
dc.date.available2026-07-07T03:08:29Z
dc.descriptionWeakly coupled superconducting layers are described by the three-dimensional XY model with strong coupling in two directions and weak coupling in the third direction. For the usual Josephson-type interplane coupling the coherence between the layers is lost at the same temperature as that within the layers. Thus a low-temperature layer decoupling due to a proliferation of fluxons between planes, as proposed by Friedel, does not occur in this case. However, for a modified interplane coupling there are two phase transitions, one of a Kosterlitz-Thouless type from a disordered high-temperature phase to an intermediate phase with phase coherence only parallel to the layers, the second from this effectively two-dimensional phase to a three-dimensional phase with coherence in all directions and a finite "n-state" order parameter. Thus we do find a "Friedel transition" for this special class of models.
dc.description10 pages, 4 postscript figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9604028
dc.identifierhttp://arxiv.org/abs/cond-mat/9604028
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/27515
dc.subjectCondensed Matter
dc.titleFriedel transition in a modified XY model
dc.typetext

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