The possible origin of incommensurate spin textures in HTSC

An model of La<Subscript>2-x</Subscript>Sr<Subscript>x</Subscript>CuO<Subscript>4</Sub script> explaining the features of incommensurate spin textures without any assumption of stripe formation is proposed. The foundations of this model are the mechanism of negative-U center formation proposed earlier and the concept of specific ordering of doped ions. It is shown that within the framework of the proposed model the features of “stripe” textures of La<Subscript>2-x</Subscript>Sr<Subscript>x</Subscript>CuO<Subscript>4</Sub script> reflect exclusively the geometrical relations existing in a square lattice and the competition between different types of doped hole ordering. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006