Dynamic Structure Factor of the Two-Dimensional Shastry-Sutherland Model

Abstract

We calculate the 2-triplon contribution to the dynamic structure factor of the 2-dimensional Shastry-Sutherland model, realized in SrCu2(BO3)2, by means of perturbative continuous unitary transformations. For realistic parameters we find flat bound 2-triplon bands. These bands show large weight in the structure factor depending strongly on momentum. So our findings permit a quantitative understanding of high precision inelastic neutron scattering experiments.

4 pages, 3 figures, minor changes accounted for

References in corpus (2)

• Excitations in one-dimensional S=1/2 quantum antiferromagnets
• The Structure of Operators in Effective Particle-Conserving Models

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