Superconductors with topological order

M. C. Diamantini (), P. Sodano () and C. A. Trugenberger ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 53, issue 1, 19-22

Abstract: We propose a mechanism of superconductivity in which the order of the ground state does not arise from the usual Landau mechanism of spontaneous symmetry breaking but is rather of topological origin. The low-energy effective theory is formulated in terms of emerging gauge fields rather than a local order parameter and the ground state is degenerate on topologically non-trivial manifolds. The simplest example of this mechanism of superconductivity is concretely realized as global superconductivity in Josephson junction arrays. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 11.10.-z Field theory; 74.20.Mn Nonconventional mechanisms (spin fluctuations; polarons and bipolarons; resonating valence bond model; anyon mechanism; marginal Fermi liquid; Luttinger liquid; etc.) (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00345-0

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