Explanation of the Phase Diagram of High-Temperature Superconductors in Terms of the Model of Negative-U Centers Superconductivity

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dc.creatorTsendin, K. D.
dc.creatorPopov, B. P.
dc.creatorDenisov, D. V.
dc.date2005-02-10
dc.date.accessioned2026-07-07T03:03:41Z
dc.date.available2026-07-07T03:03:41Z
dc.descriptionIt is demonstrated qualitatively how a unified explanation of the wide variety of different regions in a typical phase diagram of HTSC can be given in terms of the model of negative-U centers superconductivity. Both the existence of four regions (pseudogap, superconducting, non Fermi-liquid and Fermi-liquid), in the phase diagram and all the transitions between these regions were explained by assuming that negative-U centers exist in HTSC and qualitatively taking into account their thermodynamic and direct quantum-mechanical interaction with ordinary electrons from the valence band. It is found that the principal parameter determining the properties of HTSC in the model of negative-U centers is the relative concentration of electrons belonging to negative-U centers. The negative-U centers naturally determine both the superconducting properties of HTSC systems and the entire phase diagram in the normal state.
dc.description16 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0502261
dc.identifierhttp://arxiv.org/abs/cond-mat/0502261
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25846
dc.subjectSuperconductivity
dc.titleExplanation of the Phase Diagram of High-Temperature Superconductors in Terms of the Model of Negative-U Centers Superconductivity
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