Thermal conductivity due to spinons in the one-dimensional quantum spin system Sr2V3O9

Takayuki Kawamata, Masanori Uesaka, Mitsuhide Sato, Koki Naruse, Kazutaka Kudo, Norio Kobayashi, Yoji Koike

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Abstract

We have measured the thermal conductivity along different directions of the S = 1/2 one-dimensional spin system Sr2V3O9 in magnetic fields up to 14 T. It has been found that the thermal conductivity along the [101] direction, κ[101], is large and markedly suppressed by the application of magnetic field, indicating that there is a large contribution of spinons to κ[101] and that the spin chains run along the [101] direction. The maximum value of the thermal conductivity due to spinons is ∼14W/(K·m) along the [101] direction, supporting the empirical law that the magnitude of the thermal conductivity due to spinons is roughly proportional to the antiferromagnetic interaction between the nearest neighboring spins.

Original languageEnglish
Article number054601
JournalJournal of the Physical Society of Japan
Volume83
Issue number5
DOIs
Publication statusPublished - May 15 2014

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thermal conductivity
magnetic fields
interactions

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Thermal conductivity due to spinons in the one-dimensional quantum spin system Sr2V3O9 . / Kawamata, Takayuki; Uesaka, Masanori; Sato, Mitsuhide; Naruse, Koki; Kudo, Kazutaka; Kobayashi, Norio; Koike, Yoji.

In: Journal of the Physical Society of Japan, Vol. 83, No. 5, 054601, 15.05.2014.

Research output: Contribution to journalArticle

Kawamata, Takayuki ; Uesaka, Masanori ; Sato, Mitsuhide ; Naruse, Koki ; Kudo, Kazutaka ; Kobayashi, Norio ; Koike, Yoji. / Thermal conductivity due to spinons in the one-dimensional quantum spin system Sr2V3O9 In: Journal of the Physical Society of Japan. 2014 ; Vol. 83, No. 5.
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AU - Sato, Mitsuhide

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AU - Kudo, Kazutaka

AU - Kobayashi, Norio

AU - Koike, Yoji

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