Competition between plaquette and dimer phases in Heisenberg chains

Details Competition between plaquette and dimer phases in Heisenberg chains Competition between plaquette and dimer phases in Heisenberg chains

1997-05-16

arxiv.org/abs/cond-mat/9705162v1

Physics

Condensed Matter

9 pages (Latex), 4 ps-figures included, (accepted for publication in Phys.Lett. A)

Scientific paper

10.1016/S0375-9601(97)00374-5

We consider a class of one-dimensional Heisenberg spin models (plaquette
chains) related to the recently found 1/5-depleted square-lattice Heisenberg
system $CaV_4O_9$. A number of exact and exact-numerical results concerning the
properties of the competing dimer and resonating plaquette phases are
presented.

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