One-Dimensional Metallic Behavior of the Stripe Phase in La2-xSrxCuO4

Fleck M., Lichtenstein A. I., Pavarini E., Olés A. M.

Max-Planck-Institut für Festkörperforschung, Stuttgart, D-70569, Germany;
Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, Poland

Using an exact diagonalization method within the dynamical mean-field theory we found stable stripe phases in the two-dimensional Hubbard model doped by  holes, with a crossover from diagonal to vertical site-centered stripes at doping . The doping dependence of the size of magnetic domains and chemical potential shift  are in quantitative agreement with the experimental results for La2-xSrxCuO4. The one-dimensional metallic behavior along the domain walls explains the observed suppression of spectral weight along the Brillouin zone diagonal. 

A reprint of this paper can be obtained here .

Physical Review Letters, 84 4962-4965, 2000.

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