Emergent honeycomb lattice in LiZn2Mo3O8
Rebecca Flint, Patrick A. Lee
TL;DR
This paper proposes that in LiZn2Mo3O8, a decoupling of a triangular lattice into an emergent honeycomb lattice stabilizes a spin liquid state, supported by theoretical modeling and potential experimental tests.
Contribution
It introduces the concept of emergent lattices in spin liquids, specifically showing how a triangular lattice can decouple into a honeycomb lattice to stabilize spin-liquid behavior.
Findings
Disappearance of 2/3rds of spins at low temperatures in LiZn2Mo3O8.
Emergent honeycomb lattice stabilizes spin liquids in the $J_1-J_2$ model.
Possible 3D analogue in Ba2MoYO6 forming a depleted fcc lattice.
Abstract
We introduce the idea of emergent lattices, where a simple lattice decouples into two weakly-coupled lattices as a way to stabilize spin liquids. In LiZn2Mo3O8, the disappearance of 2/3rds of the spins at low temperatures suggests that its triangular lattice decouples into an emergent honeycomb lattice weakly coupled to the remaining spins, and we suggest several ways to test this proposal. We show that these orphan spins act to stabilize the spin-liquid in the honeycomb model and also discuss a possible 3D analogue, Ba2MoYO6 that may form a "depleted fcc lattice."
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