Valence-bond approach to two-dimensional broken symmetries: Application to La2CuO4

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We use a real-space approach to geometric broken symmetries to show that the on-site electron correlation destroys the bond alternation in a square lattice, even though this interaction enhances the one-dimensional bond alternation. Boundary lines between charge- and spin-density waves are derived for nonzero short-range intersite Coulomb correlations. Implications for systems like La2CuO4 are briefly discussed.

Original languageEnglish (US)
Pages (from-to)7190-7193
Number of pages4
JournalPhysical Review B
Issue number13
Publication statusPublished - 1987
Externally publishedYes


ASJC Scopus subject areas

  • Condensed Matter Physics

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