# 15th International Conference on Muon Spin Rotation, Relaxation and Resonance

28 August 2022 to 2 September 2022
Science and Technology Campus, University of Parma
Europe/Rome timezone
Submission deadline for Conference Proceedings extended until 3 October

## Dipolar-Octupolar Quantum Spin Liquids in Ce-based Pyrochlores

31 Aug 2022, 12:00
40m
Science and Technology Campus, University of Parma

#### Science and Technology Campus, University of Parma

University of Parma, Italy
Oral Spin liquids and related phenomena

### Speaker

Bruce Gaulin (McMaster University)

### Description

In geometrically-frustrated Ce-based pyrochlores, such as Ce$_2$Zr$_2$O$_7$, the effective S=1/2 of the Ce3+ crystal field ground state doublet is known to act both as a conventional dipole magnetic moment, and as an octupole. This constrains the form of its near-neighbour Hamiltonian, and allows for different ordered or quantum disordered ground states in this family of materials, where either the dipolar or octupolar nature of the S=1/2 degree of freedom dominates. I will describe recent experiments [1,2], mostly neutron scattering and heat capacity, which show how the nature of the Ce3+ ground state doublet can be revealed, and how a particular form of quantum spin liquid can be identified as the likely ground state in Ce$_2$Zr$_2$O$_7$.

### Primary author

Bruce Gaulin (McMaster University)

### Presentation Materials

There are no materials yet.