Incommensurate structure factor in a hole-doped spin-1 system

Indrani Bose; Emily Chattopadhyay

doi:10.1142/S0217979201006355

Incommensurate structure factor in a hole-doped spin-1 system

Strongly Correlated Electrons 2009-10-31 v1

Authors: Indrani Bose , Emily Chattopadhyay

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Abstract

The nickelate compound Y_{2}BaNiO_{5} is a spin-1 Haldane-gap antiferromagnet. The compound is doped with holes on replacing the off-chain Y^{3+} ions by Ca^{2+} ions. Inelastic neutron scattering (INS) experiments reveal the existence of sub-gap states on doping. A recent INS experiment provides evidence for an incommensurate double-peaked structure factor S(q) corresponding to the sub-gap states. In this paper, we formulate a microscopic theory for the origin of the incommensurate peak.

Cite

@article{arxiv.cond-mat/0012006,
  title  = {Incommensurate structure factor in a hole-doped spin-1 system},
  author = {Indrani Bose and Emily Chattopadhyay},
  journal= {arXiv preprint arXiv:cond-mat/0012006},
  year   = {2009}
}

Comments

14 Pages, Latex, 3 Figures

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