NMR and muSR in Highly Frustrated Magnets

TL;DR

This paper reviews how NMR and muSR techniques have advanced understanding of highly frustrated magnets, covering measurements, findings, and implications across various complex magnetic systems.

Contribution

It provides a comprehensive overview of experimental results obtained via NMR and muSR in different classes of highly frustrated magnetic materials.

Findings

Insights into static and dynamic spin susceptibilities

Characterization of molecular nanomagnets

Understanding of degenerate ground states in pyrochlore and kagome lattices

Abstract

We present a brief overview on some of the most significant achievements obtained by means of NMR and muSR techniques in highly frustrated magnets. First the basic quantities measured by the two techniques will be presented and their connection to the microscopic static and dynamical spin susceptibility recalled. Then the main findings will be outlined, starting from the most simple frustrated units, the molecular nanomagnets, to artificially built frustrated systems as $^{3}$He on graphite, to magnets with a macroscopically degenerate ground-state as the ones on a pyrochlore or kagom\'e lattices.