Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of TlCuCl3

Details Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of TlCuCl3 Magnon Dispersion in the Field-Induced Magnetically Ordered Phase of TlCuCl3

2002-05-02

arxiv.org/abs/cond-mat/0205052v2

Phys. Rev. Lett. 89, 077203 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, REVTeX4

Scientific paper

10.1103/PhysRevLett.89.077203

The magnetic properties of the interacting dimer system TlCuCl3 are investigated within a bond-operator formulation. The observed field-induced staggered magnetic order perpendicular to the field is described as a Bose condensation of magnons which are linear combinations of dimer singlet and triplet modes. This technique accounts for the magnetization curve and for the field dependence of the magnon dispersion curves observed by high-field neutron scattering measurements.

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