Continuum spin excitations in S=1 one-dimensional antiferromagnet

I. A. Zaliznyak

doi:10.1063/1.1456440

Continuum spin excitations in S=1 one-dimensional antiferromagnet

Strongly Correlated Electrons 2010-07-28 v1

Authors: I. A. Zaliznyak

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Abstract

We present detailed measurement of the non-hydrodynamic part of the spin excitation spectrum in the model quasi-1D S=1 antiferromagnet CsNiCl3 by inelastic magnetic neutron scattering. In the better part of the Brillouin zone the effect of the inter-chain coupling is negligible, and spin dynamics reflects that of a single Haldane chain. We find that at q ~< 0.6pi this quantum spin system ceases to support coherent propagating excitation, which gradually turns into a continuum band of states, whose width grows with decreasing q. This finding is consistently verified under different resolution conditions, obtained with two different high-luminosity experimental setups.

Keywords

spin excitations in condensed matter magnetism quantum spin chains

Cite

@article{arxiv.cond-mat/0109065,
  title  = {Continuum spin excitations in S=1 one-dimensional antiferromagnet},
  author = {I. A. Zaliznyak},
  journal= {arXiv preprint arXiv:cond-mat/0109065},
  year   = {2010}
}

Comments

Submitted to the Proceedings of the 46 Conference on Magnetism and Magnetic Materials, Seattle 2001. MMM-48729, abstract designation GC-07

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