Spin-Peierls States of Quantum Antiferromagnets on the CaV4O9 Lattice.
نویسندگان
چکیده
We discuss the quantum paramagnetic phases of Heisenberg antiferromagnets on the 1/5-depleted square lattice found in CaV4O9. 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 “decoupled” phases found earlier, we find a possible intermediate spin-Peierls phase with spontaneously-broken lattice symmetry. Experimental signatures of the different quantum paramagnetic phases are discussed. Typeset using REVTEX
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عنوان ژورنال:
- Physical review letters
دوره 77 23 شماره
صفحات -
تاریخ انتشار 1996