# Breathing kagome XY quantum magnet with four-site ring exchange

@article{Casper2021BreathingKX, title={Breathing kagome XY quantum magnet with four-site ring exchange}, author={Niklas Casper and Wolfram Brenig}, journal={Physical Review B}, year={2021}, volume={103}, pages={094434} }

We study the impact of trimerization (breathing) of the nearest-neighbor (NN) exchange on the planar XY spin-1/2 ferromagnet on the kagome lattice, including additional four-site ring exchange. For uniform NN exchange, this model has previously been shown to transit from a long-range ordered ferromagnet into a Z2 quantum spin liquid by virtue of the ring exchange. Using quantum Monte-Carlo calculations, based on the stochastic series expansion, we present results for the spin stiffness, the… Expand

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