High-resolution study of spin excitations in the singlet ground state of SrCu2(BO3)2.

Journal Article (Journal Article)

High-resolution, inelastic neutron scattering measurements on SrCu2(BO3)2, a realization of the Shastry-Sutherland model for two-dimensional Heisenberg antiferromagnets, reveal the dispersion of the three single triplet excitations continuously across the (H,0) direction within its tetragonal basal plane. These measurements also show distinct Q dependencies for the single and multiple triplet excitations, and that these excitations are largely dispersionless perpendicular to this plane. The temperature dependence of the intensities of these excitations is well described as the complement of the dc susceptibility of SrCu2(BO3)2.

Full Text

Duke Authors

Cited Authors

  • Gaulin, BD; Lee, SH; Haravifard, S; Castellan, JP; Berlinsky, AJ; Dabkowska, HA; Qiu, Y; Copley, JR

Published Date

  • December 21, 2004

Published In

Volume / Issue

  • 93 / 26 Pt 1

Start / End Page

  • 267202 -

PubMed ID

  • 15698016

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.93.267202


  • eng