Self-Consistent Mean-Field Theory for Frustrated Josephson Junction Arrays

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dc.creatorMancini, F. P.
dc.creatorSodano, P.
dc.creatorTrombettoni, A.
dc.date2003-11-28
dc.date.accessioned2026-07-07T02:55:01Z
dc.date.available2026-07-07T02:55:01Z
dc.descriptionWe review the self-consistent mean-field theory for charge-frustrated Josephson junction arrays. Using <cos(ϕ)> (ϕis the phase of the superconducting wavefunction) as order parameter and imposing the self-consistency condition, we compute the phase boundary line between the superconducting region (<cos(ϕ)> not equal to zero) and the insulating one (<cos(ϕ)> = 0). For a uniform offset charge q=e the superconducting phase increases with respect to the situation in which q=0. Here, we generalize the self-consistent mean-field theory to include the effects induced by a random distribution of offset charges and/or of diagonal self-capacitances. For most of the phase diagram, our results agree with the outcomes of Quantum Monte Carlo simulations as well as with previous studies using the path-integral approach.
dc.descriptionPresented by F. P. Mancini at the Conference "Highlights in Condensed Matter Physics", May 9-11 2003, Salerno, Italy
dc.identifierhttps://arxiv.org/abs/cond-mat/0311640
dc.identifierhttp://arxiv.org/abs/cond-mat/0311640
dc.identifierHighlights in Condensed Matter Physics, A. Avella, R. Citro, C. Noce and M. Salerno eds., AIP Conference Proceedings Vol. 695, pp. 164-175, AIP Press, New York (2003), ISBN 0-7354-0167-5
dc.identifierdoi:10.1063/1.1639587
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/22794
dc.subjectSuperconductivity
dc.titleSelf-Consistent Mean-Field Theory for Frustrated Josephson Junction Arrays
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