Negative U-centers and defect supercondu
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S. Dzhumanov; B. Yavidov; N.A. Makhmudov
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Article
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1997
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Elsevier Science
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English
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A connection between the formation of defect bipolarons (i.e. U-centers or U-bipolarons) and superconductivity in high-T c superconductors (HTSC) is considered in two pairing limits of carriers in real r -and k-spaces. The irrelevance of r -space U-bipolarons to superconductivity is motivated. It is