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P. Wrobel, A. Maciag and R. Eder
The electronic structure and the single-particle spectral density of the stripe array formed by ladder-like domain walls (DWs) and by antiferromagnetic (AF) domains of width 2 lattice spacings is computed and compared with ARPES spectra from some doped cuprates belonging to the 214 family of compounds. We assume that bond order is formed on legs in DWs and that the phase of the sublattice magnetization changes by pi across each DW. Both, the intensity map plotted in the coordination frame momentum-energy, and the intensity map of the first Brillouin zone (1BZ) at the Fermi energy reproduce surprisingly well the ARPES spectra obtained at the doping level of 15%. We consider this agreement as an argument for a scenario of coexisting bond ordered regions and AF regions in the stripe phase of moderately doped cuprates. |