Low-Lying Magnetic Excitation of the Shastry-Sutherland Model

Preprint

10 January 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0101125

Abstract

By using perturbation calculation and numerical diagonalization, low-energy spin dynamics of the Shastry-Sutherland model is investigated paying particular attention to the two-particle coherent motion. In addition to spin-singlet- and triplet bound states, we find novel branches of coherent motion of a bound quintet pair, which are usually unstable because of repulsion. Unusual dispersion observed in neutron-scattering measurements are explained by the present theory. The importance of the effects of phonon is also pointed out.

Keywords

SHASTRY SUTHERLAND MODEL
MAGNETIC EXCITATION
SUTHERLAND MODEL
COHERENT MOTION
LYING MAGNETIC
LOW LYING
PHONON

All Related Versions

Version 1, 2001-01-10, ArXiv
Published version: Physical Review Letters, 86 (3), 520.

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