Magnetic field-dependent thermal transport in a spin-1/2 chain compound

A. V. Sologubenko, K. Berggold, T. Lorenz, A. Rosch, E. Shimshoni, M. D. Phillips, M. M. Turnbull

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We present experimental results on the thermal conductivity κ of the S = 1 / 2 chain compound copper pyrazine dinitrate (C4 H4 N2) (NO3)2 at temperatures T between 0.37 and 10 K in magnetic fields B up to 17 T. The spin contribution κs (B, T) parallel to the chains has been identified. At low temperatures, κs (B) is characterized by two main features, namely a minimum at μB B ∼ kB T and a plateau-like feature in the vicinity of the saturation field. Analysis of the high-field data suggests that the mean free path is surprisingly weakly dependent on both field and momentum.

Original languageEnglish
Pages (from-to)1445-1446
Number of pages2
JournalPhysica B: Condensed Matter
Issue number5-9
StatePublished - 1 Apr 2008
Externally publishedYes


  • Quantum critical point
  • Spin chains
  • Thermal conductivity


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