Speaker
Ilaria Villa
(Paul Scherrer Institute)
Description
Rare-earth pyrochlores frequently exhibit spin ice correlations and, therefore, can potentially host quantum spin ice (QSI) phases. In these systems, the spin-orbital ground state doublet can be represented as an effective pseudo-spin 1/2. In addition to dipolar moments, multipoles are allowed, which can stabilise ice or ordered phases, or introduce quantum fluctuations on a dipolar spin ice manifold.
Magnetostriction can reveal hidden multipolar orders and is proposed for distinguishing dipolar and octupolar QSI. This study presents magnetostriction measurements at ultra-low temperatures on QSI candidates based on cerium and praseodymium.
Author
Ilaria Villa
(Paul Scherrer Institute)
Co-authors
Marek Bartkowiak
(Laboratory for Neutron and Muon Instrumentation (LIN), Paul Scherrer Institut)
Prof.
Michel Kenzelmann
(Paul Scherrer Insitut, Laboratory for Neutron Scattering & Imaging)
Romain Franck Sibille
