Dynamic structure factor of the two-dimensional Shastry-Sutherland model

被引：38

作者：

Knetter, C ^{[1
]}

Uhrig, GS ^{[1
]}

机构：

[1] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.92.027204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the two-triplon contribution to the dynamic structure factor of the two-dimensional Shastry-Sutherland model, realized in SrCu2(BO3)(2), by means of perturbative continuous unitary transformations. For realistic parameters we find flat bound two-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.

引用

页数：4

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