Evidence for Ballistic Thermal Conduction in the One-Dimensional S=1/2 Heisenberg Antiferromagnetic Spin System Sr_2CuO_3(Condensed matter: structure and mechanical and thermal properties)
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概要
- 論文の詳細を見る
We have measured the thermal conductivity of the one-dimensional (1D) S=1/2 Heisenberg antiferromagnetic spin system of Sr_2Cu_<1-x>Pd_xO_3 single crystals including nonmagnetic impurities of Pd^<2+>. It has been found that the mean free path of spinons along the ID spin chain at low temperatures is very close to the average length of finite spin chains between spin defects estimated from the magnetic susceptibility measurements. This proves that the thermal conduction due to spinons at low temperatures in Sr_2CuO_3 is ballistic as theoretically expected [Zotos et al: Phys. Rev. Lett. 55 (1997) 11029].
- 社団法人日本物理学会の論文
- 2008-03-15
著者
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Kobayashi Norio
Institute For Materials Research Tohoku University
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野地 尚
東北大工
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KOIKE Yoji
Department of Applied Physics, Graduate School of Engineering, Tohoku University
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小島 憲道
東大総合文化
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黒田 規敬
熊本大学大学院
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小林 長夫
東北大学大学院理学研究科
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佐藤 知矢
Department Of Physics Faculty Of Science Shinshu University
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KAWAMATA Takayuki
Department of Applied Physics, Tohoku University
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TAKAHASHI Nobuo
Department of Applied Physics, Tohoku University
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ADACHI Tadashi
Department of Applied Physics, Tohoku University
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NOJI Takashi
Department of Applied Physics, Tohoku University
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KUDO Kazutaka
Institute for Materials Research, Tohoku University
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Kobayashi N
Institute For Materials Research Tohoku University
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Koike Yoji
Department Applied Physics Graduate School Of Engineering Tohoku University
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Noji Takashi
Department Of Applied Physics Faculty Of Engineering Tohoku University
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Kudo K
Institute For Materials Research Tohoku University
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Adachi T
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Adachi T
Faculty Of Environmental Sciences And Technology Okayama University
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Adachi Tadashi
Department Of Applied Physics Graduate School Of Engineering Tohoku University
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Kuroda Noritaka
Discovery Research Laboratories V Discovery Research Division Takeda Chemical Industries Ltd.
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Noto K
Institute For Materials Research Tohoku University
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Kojima N
Graduate School Of Arts And Sciences University Of Tokyo
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Kobayashi N
Tohoku Univ. Sendai Jpn
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Kobayashi N
Institute For Materials Research Tohoku University Katahira
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KOBAYASHI Norio
The Research Institute for Iron,Steel and Other Metals,Tohoku University
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Kawamata Takayuki
Department Of Applied Physics Tohoku University:crest Japan Science And Technology Agency (jst):(pre
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Nomoto T
Institute For Materials Research Tohoku University
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Kuroda N
Nec Corp. Ibaraki Jpn
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Takahashi Nobuo
Department Of Applied Biochemistry Hiroshima University
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Kobayashi Norio
Institute For Materials Recearch Tohoku University
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Takahashi Nobuo
Department Of Applied Physics Tohoku University
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Nakanomyo Takashi
Institute For Materials Research Tohoku University
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Kobayashi Norio
Faculty Of Engineering Iwate University
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小島 憲道
東大院総合
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