Field-induced commensurate long-range order in the Haldane-gap system NDMAZ

A. Zheludev; Z. Honda; K. katsumata; R. feyerherm; K. Prokes

doi:10.1209/epl/i2001-00362-7

Field-induced commensurate long-range order in the Haldane-gap system NDMAZ

Strongly Correlated Electrons 2009-11-07 v1

Authors: A. Zheludev , Z. Honda , K. katsumata , R. feyerherm , K. Prokes

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Abstract

High-field neutron diffraction studies of the new quantum-disordered S=1 linear-chain antiferromagnet Ni(C $_5$ H $_{14}$ N $_2$ ) $_2$ N $_3$ (ClO $_4$ ) (NDMAZ) are reported. At T=70 mK, at a critical field $H_c=13.4$ T applied along the (013) direction, a phase transition to a commensurate N\'{e}el-like ordered state is observed. The results are discussed in the context of existing theories of quantum phase transitions in Haldane-gap antiferromagnets, and in comparions with previous studies of the related system Ni(C $_5$ H $_{14}$ N $_2$ ) $_2$ N $_3$ (PF $_6$ ).

Keywords

Haldane gap field-induced order quantum phase transition antiferromagnet neutron diffraction long-range order

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@article{arxiv.cond-mat/0104311,
  title  = {Field-induced commensurate long-range order in the Haldane-gap system NDMAZ},
  author = {A. Zheludev and Z. Honda and K. katsumata and R. feyerherm and K. Prokes},
  journal= {arXiv preprint arXiv:cond-mat/0104311},
  year   = {2009}
}

Field-induced commensurate long-range order in the Haldane-gap system NDMAZ

Abstract

Keywords

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