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Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure

Publication ,  Journal Article
Shi, Z; Dissanayake, S; Corboz, P; Steinhardt, W; Graf, D; Silevitch, DM; Dabkowska, HA; Rosenbaum, TF; Mila, F; Haravifard, S
July 6, 2021

Motivated by the intriguing properties of the Shastry-Sutherland compound SrCu2(BO3)2 under pressure, with a still debated intermediate plaquette phase appearing at around 20 kbar and a possible deconfined critical point at higher pressure upon entering the antiferromagnetic phase, we have investigated its high-field properties in this pressure range using tunnel diode oscillator (TDO) measurements. The two main new phases revealed by these measurements are fully consistent with those identified by infinite Projected Entangled Pair states (iPEPS) calculations of the Shastry-Sutherland model, a 1/5 plateau and a 10 x 2 supersolid. Remarkably, these phases are descendants of the full-plaquette phase, the prominent candidate for the intermediate phase of SrCu2(BO3)2. The emerging picture for SrCu2(BO3)2 is shown to be that of a system dominated by a tendency to an orthorhombic distortion at intermediate pressure, an important constraint on any realistic description of the transition into the antiferromagnetic phase.

Duke Scholars

Publication Date

July 6, 2021
 

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Shi, Z., Dissanayake, S., Corboz, P., Steinhardt, W., Graf, D., Silevitch, D. M., … Haravifard, S. (2021). Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure.
Shi, Zhenzhong, Sachith Dissanayake, Philippe Corboz, William Steinhardt, David Graf, D. M. Silevitch, Hanna A. Dabkowska, T. F. Rosenbaum, Frédéric Mila, and Sara Haravifard. “Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure,” July 6, 2021.
Shi Z, Dissanayake S, Corboz P, Steinhardt W, Graf D, Silevitch DM, et al. Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure. 2021 Jul 6;
Shi Z, Dissanayake S, Corboz P, Steinhardt W, Graf D, Silevitch DM, Dabkowska HA, Rosenbaum TF, Mila F, Haravifard S. Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure. 2021 Jul 6;

Publication Date

July 6, 2021