Abstract
Neutron scattering measurements on the spin-ice candidate material have revealed two magnetic transitions at and to long-range ordered states involving the Ru and Ho sublattices, respectively. Between these transitions, the moments form short-ranged ordered spin clusters. The internal field provided by the ordered moments disrupts the fragile spin-ice state and drives the moments to order. We have directly measured a slight shift in the crystal field levels at 95 K from the Ru ordering.
- Received 15 December 2003
DOI:https://doi.org/10.1103/PhysRevLett.93.076403
©2004 American Physical Society