Abstract
Compounds forming the quasi-two-dimensional Shastry-Sutherland lattice (SSL) have attracted significant experimental and theoretical attention in the field of frustrated magnetism. This is primarily due to their realization of an exactly soluble J1-J2 orthogonal dimer model capable of hosting magnetic order, dimer singlet, and plaquette singlet phases in zero applied field and their complex magnetic phase diagrams with fractional magnetization plateaus and possible superfluid and supersolid phases found between the plateau states. The discovery and characterization of SSL compounds based on rare-earth magnetic ions provide a direct route to study the stability and properties of these exotic magnetic phases in systems with a variety of different magnetic anisotropies. In this paper, we discuss the synthesis and magnetic characterization of polycrystalline samples of the R2Be2SiO7 family, where R=Nd, Sm, and Gd-Yb. All family members crystallize in the space group P4¯21m (113) and show no signs of long-range magnetic order above 2 K, except for R=Tb which orders antiferromagnetically at 2.6 K.
| Original language | English |
|---|---|
| Article number | 014005 |
| Journal | Physical Review Materials |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2024 |
Funding
We thank Q. Ma and G. Sala for useful discussions. Research at the University of Tennessee is supported by the National Science Foundation, Division of Materials Research under Award No. NSF-DMR-2003117. The work of one of the authors (A.A.A.) was funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences.
| Funders | Funder number |
|---|---|
| National Science Foundation | |
| U.S. Department of Energy | |
| Division of Materials Research | NSF-DMR-2003117 |
| Office of Science | |
| Basic Energy Sciences | |
| University of Tennessee |