Titlebook: Oxygen Disorder Effects in High-Tc Superconductors; J. L. Morán-López,Ivan K. Schuller Book 1990 Plenum Press, New York 1990 Superconducto

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Tight-Binding Investigation of the Electronic Properties of Ordered and Disordered Defects in the YBthe Cu-O chains in YBa.Cu.O. are computed for δ varying continuously between 0.0 and 0.5, either for random occupancies of the crystallographic O sites or ordered O-vacancy distributions consistent with experimental observations. In this connection, the electronic structure of YBa.Cu.O. and the elec

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Electronic Structure of the Cuprate and Bismuthate Superconductorsotic oxides. Most notable is the fact that E. falls within the O(2p) band manifold, thereby creating a rare situation where O-derived electrons participate in the conduction process. Since the itinerant carriers have predominant O(2p) orbital character, it is not surprising that the electronic and s

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Flux Pinning and Thermally Activated Flux Flow Behavior in Single Crystalline YBa2Cu3O7 and Bi2Sr2Ca-current densities and flux pin forces are determined from magnetization versus magnetic field loops. In YBa.Cu.O. we will describe the flux pin behavior at lower temperatures in terms of flux-line pinning by twin planes. In Bi.Sr.CaCu.O. the flux pin forces are one order of magnitude smaller than i

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Experimental Study of High Temperature Superconductors through Substitutionrrier concentration, magnetic properties, and indeed the superconducting properties. The response of various properties to doping allows us to elucidate the role of a particular constituent of a superconductor. We will review the results of substitution for the Cu sites in YBa.Cu.O.. New results of

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