Magnetic Properties of (VO)_2P_2O_7 from Frustrated Interchain Coupling

G. S. Uhrig; B. Normand

doi:10.1103/PhysRevB.58.R14705

Magnetic Properties of (VO)_2P_2O_7 from Frustrated Interchain Coupling

Strongly Correlated Electrons 2009-10-31 v2

Authors: G. S. Uhrig , B. Normand

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Abstract

Neutron-scattering experiments on (VO)_2P_2O_7 reveal both a gapped magnon dispersion and an unexpected, low-lying second mode. The proximity and intensity of these modes suggest a frustrated coupling between the alternating spin chains. We deduce the minimal model containing such a frustration, and show that it gives an excellent account of the magnon dispersion, static susceptibility and electron spin resonance absorption. We consider two-magnon states which bind due to frustration, and demonstrate that these may provide a consistent explanation for the second mode.

Keywords

neutron scattering frustrated coupling alternating spin chains magnon dispersion two-magnon bound states electron spin resonance

Cite

@article{arxiv.cond-mat/9807186,
  title  = {Magnetic Properties of (VO)_2P_2O_7 from Frustrated Interchain Coupling},
  author = {G. S. Uhrig and B. Normand},
  journal= {arXiv preprint arXiv:cond-mat/9807186},
  year   = {2009}
}

Comments

RevTeX, 5 pages, 6 figures, compressed from first version

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