Dynamic Spin Structure Factor of SrCu2(BO3)2 at Finite Temperatures

Shawish, S. El; Bonca, J.; Sega, I.

Dynamic Spin Structure Factor of SrCu2(BO3)2 at Finite Temperatures

Authors

Shawish, S. El

Bonca, J.

Sega, I.

Description

Using finite temperature Lanczos technique on finite clusters we calculate dynamical spin structure factor of the quasi-two-dimensional dimer spin liquid SrCu2(BO3)2 as a function of wavevector and temperature. Unusual temperature dependence of calculated spectra is in agreement with inelastic neutron scattering measurements. Normalized peak intensities of the single-triplet peak are q-independent, their unusual temperature dependence is analyzed in terms of thermodynamic quantities.
7 pages, 6 figures in color, submitted to PRB