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Enhancing T c by Oxygen Isotope Substitution in Cuprates

Müller, K.

In: Journal of Superconductivity and Novel Magnetism, 2012, vol. 25, no. 7, p. 2101-2102

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    Titre
    • Enhancing T c by Oxygen Isotope Substitution in Cuprates
    Auteur
    • Müller, K.. Physik Institut, Universität Zürich, Winterthurerstr. 190, 8057, Zürich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Superconductivity and Novel Magnetism, 2012, vol. 25, no. 7, p. 2101-2102. Springer US; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:321200
    Summary
    The phase diagram of doped cuprates is generic. For low dopings a pseudogap is present at temperatures above the superconducting phase. The pseudogap phase is heterogeneous containing superconducting clusters which become phase coherent at T c (Müller in J. Phys. Cond. Matter 19:251002, 2007). Most recent propositions suggest to increase the cluster size and therefore to enhance T c . In the present note it is recalled that over a decade ago a giant oxygen isotope effect in low doped LSCO was reported. Thus, if indeed increasing the cluster sizes becomes possible, enhancing T c towards the onset of the pseudogap phase, then it may be even further enhanced by 16O to 18O substitution