Kavli Affiliate: Leon Balents
| First 5 Authors: Matthew Ennis, Rabindranath Bag, Chunxiao Liu, Sachith E. Dissanayake, Alexander I. Kolesnikov
| Summary:
We have synthesized high-quality single crystal samples of the erbium-based
triangular lattice compound Ba3Er(BO3)3. Thermal and magnetic measurements
reveal large anisotropy and a possible phase transition at 100 mK. The
low-temperature magnetic heat capacity can be understood from the two Wyckoff
positions that the magnetic ions Er3+ occupy, which have distinct symmetry
properties and crystal field environments. A point charge calculation for the
crystal electric field levels is consistent with this understanding. Based on
symmetry analysis and classical simulation, we argue that Ba3Er(BO3)3 realizes
an interesting two-sublattice exchange physics, in which the honeycomb lattice
spins develop ferromagnetic correlations due to the additional spins at the
hexagon centers but eventually order antiferromagnetically. Additionally, our
results suggest that quantum fluctuations need to be considered in order to
fully explain the experimental observations.
| Search Query: ArXiv Query: search_query=au:”Leon Balents”&id_list=&start=0&max_results=10