Field-induced magnetic ordering in the Haldane system PbNi2V2O8

N. Tsujii; O. Suzuki; H. Suzuki; H. Kitazawa; G. Kido

doi:10.1103/PhysRevB.72.104402

Field-induced magnetic ordering in the Haldane system PbNi2V2O8

Strongly Correlated Electrons 2009-11-11 v1

Authors: N. Tsujii , O. Suzuki , H. Suzuki , H. Kitazawa , G. Kido

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Abstract

The Haldane system PbNi2V2O8 was investigated by the temperature dependent magnetization M(T) measurements at fields higher than H_c, with H_c the critical fields necessary to close the Haldane gap. It is revealed that M(T) for H > H_c exhibits a cusp-like minimum at T_{min}, below which M(T) increases with decreasing T having a convex curve. These features have been observed for both $H \parallel c$ and $H \perp c$ , with c-axis being parallel to the chain. These data indicate the occurrence of field-induced magnetic ordering around T_{min}. Phase boundaries for $H \parallel c$ and $H \perp c$ do not cross each other, consistent with the theoretical calculation for negative single-ion anisotropy D.

Keywords

Haldane system field-induced ordering magnetization single-ion anisotropy PbNi2V2O8

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@article{arxiv.cond-mat/0505444,
  title  = {Field-induced magnetic ordering in the Haldane system PbNi2V2O8},
  author = {N. Tsujii and O. Suzuki and H. Suzuki and H. Kitazawa and G. Kido},
  journal= {arXiv preprint arXiv:cond-mat/0505444},
  year   = {2009}
}

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3 figures, submitted to Phys. Rev. B

Field-induced magnetic ordering in the Haldane system PbNi2V2O8

Abstract

Keywords

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