Spin-1/2 kagome-lattice antiferromagnets Cs$_2$Cu$_3$SnF$_{12}$ and Rb$_2$Cu$_3$SnF$_{12}$

TL;DR

This paper reviews the static and dynamic properties of two non-mineral kagome-lattice antiferromagnets, Cs$_2$Cu$_3$SnF$_{12}$ and Rb$_2$Cu$_3$SnF$_{12}$, which are promising candidates for realizing quantum spin liquid states.

Contribution

It provides a comprehensive review of the static and dynamic magnetic properties of Cs$_2$Cu$_3$SnF$_{12}$ and Rb$_2$Cu$_3$SnF$_{12}$, expanding understanding of non-mineral kagome antiferromagnets.

Findings

Detailed characterization of magnetic excitations.

Evidence supporting quantum spin liquid behavior.

Comparison with mineral kagome antiferromagnets.

Abstract

Spin-1/2 kagome-lattice Heisenberg antiferromagnet is theoretically known to have a quantum spin liquid ground state, one of the frontiers of condensed matter physics. The search for the model substances has been continued for a long time, and many candidate substances have been reported. Most of them are hydroxide minerals. Here, I review the static and dynamic properties of non-mineral kagome-lattice antiferromagnets Cs$_2$Cu$_3$SnF$_{12}$ and Rb$_2$Cu$_3$SnF$_{12}$.