摘要: Since in 1986 Bednorz and Muller [1] discovered the first high-Tc superconductor, the nature of charge carriers in the ceramics compounds wich contain cooper oxides planes and are antiferromagnetic insulators, remains an open problem in strongly correlated electrons. Lately, have been provided a lot of experimental evidence for the existence at the same time of superconductivity with local antiferromagnetic spin correlations in the layered cuprates. Such coexistence suggest the apparition of a new scenario, namely static stripe order, in a variety of transition metal oxides, including hole-doped La₂NiO4 and La1. 6-zNdo. 4ST₂CuO4.[2] In other cuprates, such as La1. 85 Sro. 15 CuO4 and Y Ba₂Cu3O6. 6, the magnetic scattering is consistent with the presence of dynamic antiphase antiferromagnetic (AF) domains.[3] The origin of these charge inhomogeneities is controversial. Some authors believe they are caused by Jahn-Teller (JT) distortions, in this context JT-deformations interact with carriers forming lattice polarons, which themselves form superstructures within a CuO2 sheet.[4] Others favor a purely electronic explanation. For instance, hole domain walls were observed in Hubbard model Hartree-Fock calculations.[5] In addition, computational calculations for the two-dimensional (2D) tJ experiments.[6, 7] The existence of diagonal domain walls in four-leg tJ ladders has also been reported,[8] adding to the expected strong similarities between ladders and planes.[9] A third possibility is based on frustrated phase separation (PS) where the stripes arise from a combination of a short-range attraction and long-range Coulomb repulsion.[10 …