2009 Fiscal Year Final Research Report
Direct observation of the heat transport due to spins by muon spin relaxation
| Project/Area Number |
20740212
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
KAWAMATA Takayuki The Institute of Physical and Chemical Research, 岩崎先端中間子研究室, 協力研究員 (00431601)
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| Project Period (FY) |
2008 – 2009
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| Keywords | スピンによる熱伝導 / 低次元量子スピン系 / ミュオンスピン緩和法 / 熱伝導 / 1次元スピン系 |
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| Research Abstract |
In 2-leg spin-ladder system Sr_<14>Cu_<24>O_<41>, direct evidence of heat transport due to spins has not been observed by muon spin relaxation. This result is suggested that we should perform experiments in one-dimensional quantum spin system SrCuO_<2> extended mean free path due to spins, lspin. The lspin has been extended to ~ 30000 A by using high purity raw materials and O_<2> annealing. At present, this value of lspin is the largest in the low dimensional quantum spin systems.
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[Journal Article] Single-Crystal Growth of Pb2V3O9 and the Bose-Einstein Condensed State of Triplons Studied by Thermal Conductivity, Specific Heat and Magnetization Measurements2009
Author(s)
T Kawamata, N Sugawara, M Uesaka, N Kaneko, T Kajiwara, H Yamane, K Koyama, K Kudo, N Kobayashi, Y Koike
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Journal Title
Journal of Physics: Conference Series 150
Pages: 0420871-4
Peer Reviewed
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[Presentation] Pb2V3O9 and the Bose-Einstein Condensed State of Triplons Studied by Thermal Conductivity, Specific Heat and Magnetization Measurements2008
Author(s)
T Kawamata, N Sugawara, M Uesaka, N Kaneko, T Kajiwara, H Yamane, K Koyama, K Kudo, N Kobayashi, Y Koike
Organizer
25th International Conference on Low Temperature Physics (LT25)
Place of Presentation
Amsterdam (Netherland)
Year and Date
20080800
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[Presentation] 熱伝導, 比熱, 磁化からみたPb2V3O9単結晶におけるトリプロンのボース・アインシュタイン凝縮相転移2008
Author(s)
川股隆行, 菅原直樹, S.M. Haidar, 金子直人, 上坂正憲, 小山佳一, 工藤一貴, 小林典男, 小池洋二
Organizer
第2回トピカルミーティング「フラストレーションとマルチフェロイクス」
Place of Presentation
京都大学(京都)
Year and Date
20080606-20080607
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