Influence of incommensurability on SDW and CDW amplitudes in underdoped cuprates

Abstract

Self-consistent calculations of spin (charge) density wave order (SDW/CDW) parameters have been performed for bilayered cuprates on the basis of a singlet correlated band model. The smooth development of the pseudogap formation temperature is explained from underdoped to overdoped states and the Fourier amplitudes < sq (spin) and < eq > (charge) modulations have been calculated. We have found a maximum of the incommensurability for doping 0.09 ÷ 0.11 holes per copper site. © 2000 Elsevier Science B.V. All rights reserved.