The Phase Diagram of the Shastry-Sutherland Antiferromagnet

Zheng Weihong, J. Oitmaa, C. J. Hamer

The Shastry-Sutherland model, which provides a representation of the magnetic properties of SrCu${}_2$(BO${}_3$)${}_2$, has been studied by series expansion methods at T=0. Our results s…