Interplay between incommensurate phases in the cuprates

الأصل · EN

We establish the qualitative behavior of the incommensurability ε, optimal domain wall filling ν and chemical potential μ for increasing doping by a systematic slave-boson study of an array of vertical stripes separated by up to d=11 lattice constants. Our findings obtained in the Hubbard model with the next-nearest neighbor hopping t'=-0.15t agree qualitatively with the experimental data for the cuprates in the doping regime x 1/8. It is found that t' modifies the optimal filling ν and triggers the crossover to the diagonal (1,1) spiral phase at increasing doping, stabilized already at x≃ 0.09 for t'=-0.3t.