Spin thermal conductivity of the Haldane chain compound Y2 BaNiO5

K. Kordonis, A. V. Sologubenko, T. Lorenz, S. W. Cheong, A. Freimuth

Research output: Contribution to journalArticlepeer-review


We report experimental results on the thermal conductivity of the spin S = 1 chain compound Y2 BaNiO5 in the temperature range between 5.5 and 300 K. The results show a clear anisotropic behavior of the thermal conductivity along different lattice directions. The contributions to the total thermal conductivity provided by phonons and magnons are estimated. The spin-related energy diffusion constant DE (T), calculated from the experimental data of the magnon thermal conductivity, is approaching the theoretically predicted high-temperature limiting value close to room temperature. With decreasing temperature, DE (T) increases reaching a broad peak at about 120 K. At low temperatures, the scattering of spin excitations by magnetic impurities seems to be the major factor limiting the magnon thermal transport.

Original languageEnglish (US)
Pages (from-to)1245-1247
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 2
StatePublished - Mar 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


  • Energy diffusion
  • Spin chains
  • Thermal conductivity


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