ARPES Spectra from Bond-Centered Stripe Phase of Moderately Doped Cuprates

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Using a combination of the bond formalism and the spin polaron approach we calculate the single particle spectral function for the system of stripes which take the form of two-leg ladder-like domain walls (DWs) between antiferromagnetic (AF) domains with the changing across each DW by π phase of the sublattice magnetization. We assume that the ordered bonds which are in the singlet state, form in the DW a pattern which resembles two layers of a brick wall. We concentrate on the doping level 1/8 and on levels slightly above this value when, as suggested by experiments, the distance between axes of nearest stripes is four lattice spacings and the linear filling of stripes is about 1/2. By comparing the calculated and measured spectra we demonstrate that among three simplest choices of bond order in the DW, singlets formed on rungs, singlets formed on nearest legs on both sides of the stripe axis and the brick wall structure, a most obvious resemblance to the ARPES spectra at the Fermi energy from the doped La2CuO4 in the stripe phase shows the single particle spectral weight of the stripe system formed in the underlying spin background with bond order on the nearest leg on both sides of the stripe axis. This conclusion is consistent with the result of the stability analysis reported in a separate paper.