Srn-1Cun+1O2n: From One Dimension to Two Dimensions via Trellis Lattices

  • T. M. Rice
  • S. Gopalan
  • M. Sigrist
  • F. C. Zhang
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 118)


The key elements in all known cuprate superconductors are lightly doped Cu02-planes. Recently a new homologous series of compounds Sr n−1Cu n+1O2n have been reported in which the planes contain a parallel array of line defects which form a trellis lattice with ladder-segments of the square lattice weakly coupled through triangular line defects. The magnetic properties of undoped compounds will be dominated by the properties of the ladders. Heisenberg s = 1/2 ladders can have a spin liquid groundstate with a spin gap if the number of rungs is odd so that a short range RVB groundstate is predicted for such trellis lattices. Using a t- J model to describe the doped material leads to the prediction of a d- wave RVB superconducting groundstate with a large spin gap.


Cuprate Superconductor Hole Doping Triplet Excitation Spin Liquid Quasiparticle Spectrum 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • T. M. Rice
    • 1
  • S. Gopalan
    • 1
  • M. Sigrist
    • 2
  • F. C. Zhang
    • 3
  1. 1.Theoretische Physik, ETH-HönggerbergZürichSwitzerland
  2. 2.Paul Scherrer InstitutVilligen PSISwitzerland
  3. 3.Physics Department (UCTP), ML11University of CincinnatiCincinnatiUSA

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