Thermal conductivity of the quasi one-dimensional spin system Sr 2V3O9

M. Uesaka, T. Kawamata, N. Kaneko, M. Sato, Kazutaka Kudo, N. Kobayashi, Y. Koike

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have measured the thermal conductivity along the [101] direction, κ[101], along the [101̄] direction, κ [101̄], and along the b-axis, κb, of the quasi one-dimensional S=1/2 spin system Sr2V3O9 in magnetic fields up to 14 T, in order to find the thermal conductivity due to spinons and to clarify whether the spin-chains run along the [101] or [101̄] direction. It has been found that both κ[101], kappa;[101̄] and κb show one peak around 10 K in zero field and that the magnitude of κ[101̄] is larger than those of κ[101] and kappa;b. By the application of magnetic field along the heat current, the peak of kappa; [101̄] is markedly suppressed, while the peaks of κ[101] and Kb little change. These results indicate that there is a large contribution of spinons to κ[101̄] and suggest that the spin-chains run along the [101̄] direction.

Original languageEnglish
Article number022068
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 2
DOIs
Publication statusPublished - 2010
Externally publishedYes

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thermal conductivity
magnetic fields
heat

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Uesaka, M., Kawamata, T., Kaneko, N., Sato, M., Kudo, K., Kobayashi, N., & Koike, Y. (2010). Thermal conductivity of the quasi one-dimensional spin system Sr 2V3O9. Journal of Physics: Conference Series, 200(SECTION 2), [022068]. https://doi.org/10.1088/1742-6596/200/2/022068

Thermal conductivity of the quasi one-dimensional spin system Sr 2V3O9. / Uesaka, M.; Kawamata, T.; Kaneko, N.; Sato, M.; Kudo, Kazutaka; Kobayashi, N.; Koike, Y.

In: Journal of Physics: Conference Series, Vol. 200, No. SECTION 2, 022068, 2010.

Research output: Contribution to journalArticle

Uesaka, M, Kawamata, T, Kaneko, N, Sato, M, Kudo, K, Kobayashi, N & Koike, Y 2010, 'Thermal conductivity of the quasi one-dimensional spin system Sr 2V3O9', Journal of Physics: Conference Series, vol. 200, no. SECTION 2, 022068. https://doi.org/10.1088/1742-6596/200/2/022068
Uesaka, M. ; Kawamata, T. ; Kaneko, N. ; Sato, M. ; Kudo, Kazutaka ; Kobayashi, N. ; Koike, Y. / Thermal conductivity of the quasi one-dimensional spin system Sr 2V3O9. In: Journal of Physics: Conference Series. 2010 ; Vol. 200, No. SECTION 2.
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AU - Kaneko, N.

AU - Sato, M.

AU - Kudo, Kazutaka

AU - Kobayashi, N.

AU - Koike, Y.

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N2 - We have measured the thermal conductivity along the [101] direction, κ[101], along the [101̄] direction, κ [101̄], and along the b-axis, κb, of the quasi one-dimensional S=1/2 spin system Sr2V3O9 in magnetic fields up to 14 T, in order to find the thermal conductivity due to spinons and to clarify whether the spin-chains run along the [101] or [101̄] direction. It has been found that both κ[101], kappa;[101̄] and κb show one peak around 10 K in zero field and that the magnitude of κ[101̄] is larger than those of κ[101] and kappa;b. By the application of magnetic field along the heat current, the peak of kappa; [101̄] is markedly suppressed, while the peaks of κ[101] and Kb little change. These results indicate that there is a large contribution of spinons to κ[101̄] and suggest that the spin-chains run along the [101̄] direction.

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