Abstract
We synthesize and study single crystals of the layered honeycomb lattice Mott insulators and with magnetic ions. The newly found features a nearly ideal honeycomb lattice and orders antiferromagnetically at 30 K. Single crystals of adopt a honeycomb lattice with either or more distorted below 300 K, depending on detailed synthesis conditions. We find that in both structures hosts a well-defined magnetic state, in contrast to the singlet ground state found in polycrystalline . A phase diagram generated based on our results uncovers a new, direct correlation between the magnetic ground state and basal-plane distortions in the honeycomb ruthenates.
- Received 22 August 2014
- Revised 26 September 2014
DOI:https://doi.org/10.1103/PhysRevB.90.161110
©2014 American Physical Society