Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate

T. Lancaster; S. J. Blundell; M. L. Brooks; P. J. Baker; F. L. Pratt; J. L. Manson; C. P. Landee; C. Baines

doi:10.1103/PhysRevB.73.020410

Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate

Strongly Correlated Electrons 2007-11-14 v1

Authors: T. Lancaster , S. J. Blundell , M. L. Brooks , P. J. Baker , F. L. Pratt , J. L. Manson , C. P. Landee , C. Baines

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Abstract

We present the first evidence of magnetic order in the quasi-one-dimensional spin 1/2 molecular chain compound, copper pyrazine dinitrate Cu(C4H4N2)(NO3)2}. Zero field muon-spin relaxation measurements made at dilution refrigerator temperatures show oscillations in the measured asymmetry, characteristic of a quasistatic magnetic field at the muon sites. Our measurements provide convincing evidence for long range magnetic order below a temperature T_N=107(1) mK. This leads to an estimate of the interchain coupling constant of |J'|/k_B=0.046 K and to a ratio |J'/J| = 4.4 x 10^-3.

Keywords

magnetic order quasi-one-dimensional spin chain muon-spin relaxation long-range order interchain coupling copper pyrazine dinitrate

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@article{arxiv.cond-mat/0510691,
  title  = {Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate},
  author = {T. Lancaster and S. J. Blundell and M. L. Brooks and P. J. Baker and F. L. Pratt and J. L. Manson and C. P. Landee and C. Baines},
  journal= {arXiv preprint arXiv:cond-mat/0510691},
  year   = {2007}
}

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4 pages, 3 figures. Submitted to Physical Review Letters

Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate

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