One-dimensional metallic behavior of the stripe phase in La${}_{2-x}$Sr${}_x$CuO${}_4$

Abstract

Using an exact diagonalization method within the dynamical mean-field theory we study stripe phases in the two-dimensional Hubbard model. We find a crossover at doping $\delta \simeq 0.05$ from diagonal stripes to vertical site-centered stripes with populated domain walls, stable in a broad range of doping, $0.05<\delta <0.17$. The calculated chemical potential shift $\propto -{\delta }^2$ and the doping dependence of the magnetic incommensurability are in quantitative agreement with the experimental results for doped La${}_{2-x}$Sr${}_x$CuO${}_4$. The electronic structure shows one-dimensional metallic behavior along the domain walls, and explains the suppression of spectral weight along the Brillouin zone diagonal.

4 pages, 4 figures

References in corpus (2)

• Direct Observation of a One Dimensional Static Spin Modulation in Insulating La1.95Sr0.05CuO4
• Spectral and transport properties of doped Mott-Hubbard systems with incommensurate magnetic order

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