Spin liquids in geometrically perfect triangular antiferromagnets

TL;DR

This paper reviews recent theoretical and experimental advances in understanding quantum spin liquids in geometrically perfect triangular antiferromagnets, highlighting how imperfections and tuning influence their exotic magnetic states.

Contribution

It provides a comprehensive comparison of theoretical phase regimes with experimental findings in Co- and Yb-based triangular antiferromagnets, emphasizing the role of imperfections in stabilizing spin liquids.

Findings

Unconventional spin dynamics observed in both ordered and disordered states.

Imperfections in triangular systems can aid in stabilizing dynamic spin states.

Theoretical models delineate parameter regimes for spin-liquid phases.

Abstract

The cradle of quantum spin liquids, triangular antiferromagnets show strong proclivity to magnetic order and require deliberate tuning to stabilize a spin-liquid state. In this brief review, we juxtapose recent theoretical developments that trace the parameter regime of the spin-liquid phase, with experimental results for Co-based and Yb-based triangular antiferromagnets. Unconventional spin dynamics arising from both ordered and disordered ground states is discussed, and the notion of a geometrically perfect triangular system is scrutinized to demonstrate non-trivial imperfections that may assist magnetic frustration in stabilizing dynamic spin states with peculiar excitations.