Defining under and over-doping as bond order phenomena in the pair plaid model

摘要

Within the rules of a pair plaid model charge-lattice lock-in patterns are identified, which are responsible for the trends to characteristic hole values for a variety of features in the doping curves [onsets, kinks or optima] of cuprates and related materials. Examples are the prevalence of optimal hole values of 0.16, 0.22 or 0.25. Selection of one of these values depends on the degree of isolation of the plane. Periods of pair plaid represent a central aspect for an algorithm of T, or doping curve predictions when combined with the plane isolation model. Aspects of the theoretical concept of pair plaids have been made visible in recent STM graphs indicating electronic crystal behavior for the related pseudo-gap region. Pair plaids are in competition with stripes of non-superconducting singles and can be transformed into them. This competition is further elucidated with emphasis on the regions, where both orders can coexist. This further defines over and under-doping. (c) 2005 Published by Elsevier Ltd.