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Phys. Rev. Lett. 84, 4962–4965 (2000)

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

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Marcus Fleck, Alexander I. Lichtenstein, and Eva Pavarini
Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany

Andrzej M. Oleś
Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, Poland

Received 30 November 1999; published in the issue dated 22 May 2000

Using an exact diagonalization method within the dynamical mean-field theory we found stable stripe phases in the two-dimensional Hubbard model doped by 0.03<δ<0.2 holes, with a crossover from diagonal to vertical site-centered stripes at doping δ0.05. The doping dependence of the size of magnetic domains and chemical potential shift Δμ-δ2 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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.4962
DOI:
10.1103/PhysRevLett.84.4962
PACS:
74.25.Jb, 71.27.+a, 75.10.-b, 79.60.-i