  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.

Strongly Correlated Electrons;Materials Science