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

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

2003-09-17

arxiv.org/abs/cond-mat/0309408v2

Phys. Rev. Lett. 92, 027204 (2004)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures, minor changes accounted for

Scientific paper

10.1103/PhysRevLett.92.027204

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.

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