Binding and Structural Aspects of High-Tc Superconductivity
All layered cuprate superconductors are formed of several extended anionic complexes embedded in a cationic lattice frame. Layered anionic [CuO2]2--complexes are undispensibly present. There is a second anionic complex, varying from system to system, and doping the [CuO2]2--complex. As another generic feature, this second complex tends to quasi-onedimensional bonding. A further generic feature is the presence of ‘bridging’ oxygen mediating the doping charge transfer and causing a very strong deformation potential for the doping electron states. These features can lead to an effective interlayer coupling which is capable of producing s-channel superconductivity.
KeywordsAnionic Complex Cuprate Superconductor Charge Redistribution Apical Oxygen Positron Wave Function
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- A. W. Hewat, E. A. Hewat, P. Bordet, J. Capponi, C. Chaillout, J. Chenevas, J.-L. Hodeau, and M. Marezio, Proc. Int. Sem. HTSC Dubna 89, World Scientific, Singapore 1990, p. 24, and quotations therein.Google Scholar
- T. Egami and W. Dmowski, Proc. of the Drexel Int. Conf on HTSC, Philadelphia, USA, July 1987, Progr. in HTSC 3 247 World Scientific Singapore (1988).Google Scholar
- H. Eschrig, R. Monnier, G. Schadler, and D. Schmicker, to be published.Google Scholar
- S.-L. Drechsler, J. Malek, and H. Eschrig, to be published.Google Scholar
- F. Fischer and H. Koppel, to be published.Google Scholar
- J. Ranninger and S. Robaszkiewicz Physica B135 1985 468; J. Rannin-ger, R. Micnas, and S. Robaszkiewicz, Phys. Rev. B36 (1987)180; R. Fried-berg and T. D. Lee, Phys. Rev. B40 (1989) 674Google Scholar
- S. D. Conradson, I. D. Raistrick, and A. R. Bishop,to appear in Science (1990), J. M. de Leon, S. Conradson, I. Batistic, and A. Bishop, Phys. Rev. Lett, to be published.Google Scholar