Spin-Peierls States of Quantum Antiferromagnets on the CaV4O9 Lattice.

  title={Spin-Peierls States of Quantum Antiferromagnets on the CaV4O9 Lattice.},
  author={Sachdev and Read},
  journal={Physical review letters},
  volume={77 23},
  • Sachdev, Read
  • Published 1996
  • Physics, Medicine
  • Physical review letters
  • We discuss the quantum paramagnetic phases of Heisenberg antiferromagnets on the 1/5-depleted square lattice found in CaV{sub 4}O{sub 9}. The possible phases of the quantum dimer model on this lattice are obtained by a mapping to a quantum-mechanical height model. In addition to the {open_quote}{open_quote}decoupled{close_quote}{close_quote} phases found earlier, we find a possible intermediate spin-Peierls phase with spontaneously broken lattice symmetry. Experimental signatures of the… CONTINUE READING
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