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Superconductivity in the Repulsive Hubbard Model

Baeriswyl, D.

In: Journal of Superconductivity and Novel Magnetism, 2011, vol. 24, no. 3, p. 1157-1159

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    Titre
    • Superconductivity in the Repulsive Hubbard Model
    Auteur
    • Baeriswyl, D.. Department of Physics, University of Fribourg, 1700, Fribourg, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Journal of Superconductivity and Novel Magnetism, 2011, vol. 24, no. 3, p. 1157-1159. Springer US; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:314552
    Summary
    The two-dimensional repulsive Hubbard model has been investigated by a variety of methods, from small to largeU. Superconductivity with d-wave symmetry is consistently found close to half filling. After a brief review of the various methods a variational many-electron state is discussed in more detail. This trial state is a natural extension of the Gutzwiller ansatz and provides a substantial improvement thereof