How large can be SDW and CDW apmlitudes in underdoped cuprates
Abstract
Self-consistent calculation of spin (charge) density wave order (SDW/CDW) parameters have been performed for bilayered cuprates on the basis of a singlet correlated band model. Evolution of the Fermi surface in the strongly underdoped regime is described by using a two-band approach. 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.
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