Competition between plaquette and dimer phases in Heisenberg chains
classification
❄️ cond-mat
quant-ph
keywords
heisenbergplaquettechainsdimerphasesclasscompetingcompetition
read the original abstract
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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