Thermally populated versus field-induced triplon bound states in the Shastry-Sutherland lattice SrCu${}_2$(BO${}_3$)${}_2$

Dirk Wulferding, Youngsu Choi, Seungyeol Lee +6

The Shastry-Sutherland compound SrCu${}_2$(BO${}_3$)${}_2$ constituting orthogonally coupled dimers harbors a $S=0$ singlet ground state. The confluence of strong interdimer interaction…