Abstract
Two quasi-one-dimensional S=1 quantum antiferromagnetic materials, PbNi2V2O8 and SrNi2V2O8, are studied by inelastic neutron scattering on powder samples. A simple model Hamiltonian is proposed for the two systems and used to analyze the data. Quantitative information on in-chain and interchain interactions obtained from this analysis is discussed in the context of qualitatively different ground-state properties: magnetic long-range order in SrNi2V2O8 and disordered "spin liquid" Haldane-gap state in PbNi2V2O8.
| Original language | English |
|---|---|
| Pages (from-to) | 8921-8930 |
| Number of pages | 10 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 62 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1 Oct 2000 |
| Externally published | Yes |
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