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首页> 外文期刊>International Journal of Heat and Mass Transfer >Optical probing of anisotropic heat transport in the quantum spin ladder Ca_9La_5Cu_(24)O_(41)
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Optical probing of anisotropic heat transport in the quantum spin ladder Ca_9La_5Cu_(24)O_(41)

机译：量子自旋阶梯Ca_9La_5Cu_（24）O_（41）中各向异性传热的光学探测

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摘要

A transient thermal imaging technique is used to monitor heat diffusion at the surface of the antiferro-magnetic spin ladder material Ca_9La_5Cu_(24)O_(41) This material shows highly anisotropic thermal conductivity due to a large uni-directional magnetic heat transport along the ladders. The thermal conductivity is measured using optical heating as well as electrical heating, yielding 37 ± 3 W m~(-1) K~(-1) for the fast (ladder) direction and 2.5 ± 0.5 W m~(-1) K~(-1) for the slow direction, respectively. The fast direction result is in agreement with the thermal conductivity measured using other dynamic methods, but about 60% lower than the thermal conductivity measured using steady state methods.
机译：瞬态热成像技术用于监视反铁磁自旋阶梯材料Ca_9La_5Cu_（24）O_（41）的表面上的热扩散。由于沿着阶梯的大量单向磁热传递，该材料显示出高度各向异性的导热性。使用光学加热和电加热来测量热导率，在快速（梯形）方向上产生37±3 W m〜（-1）K〜（-1），在2.5±0.5 W m〜（-1）K下产生〜（-1）分别表示慢方向。快速方向结果与使用其他动态方法测得的热导率一致，但比使用稳态方法测得的热导率低约60％。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第10期|p.2531-2538|共8页
  • 作者

    M. Otter; G. Athanasopoulos; N. Hlubek; M. Montagnese; M. Labois; DA Fishman; F. de Haan; S. Singh; D. Lakehal; J. Giapintzakis; C. Hess; A. Revcolevschi; P.H.M. van Loosdrecht;

  • 作者单位

    Zernike Institute for Advanced Materials, Rijksuniversiteit Croningen, Nijenborgh 4, 9747 AG, The Netherlands;

    Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, P.O. Box 20537, Nicosia 1678, Cyprus;

    IFW-Dresden, Institute for Solid State Research, P.O. Box 270116, D-01171 Dresden, Germany;

    Zernike Institute for Advanced Materials, Rijksuniversiteit Croningen, Nijenborgh 4, 9747 AG, The Netherlands;

    ASCOMP GmbH, Technoparkstr. 1, CH-800S Zuerich, Switzerland;

    Zernike Institute for Advanced Materials, Rijksuniversiteit Croningen, Nijenborgh 4, 9747 AG, The Netherlands;

    Zernike Institute for Advanced Materials, Rijksuniversiteit Croningen, Nijenborgh 4, 9747 AG, The Netherlands;

    Laboratoire de Physico-Chimie de L'Etat Solide. ICMMO, UMR8182, University Paris-Sud, 91405 Orsay CEDEX, France;

    ASCOMP GmbH, Technoparkstr. 1, CH-800S Zuerich, Switzerland;

    Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Avenue, P.O. Box 20537, Nicosia 1678, Cyprus;

    IFW-Dresden, Institute for Solid State Research, P.O. Box 270116, D-01171 Dresden, Germany;

    Laboratoire de Physico-Chimie de L'Etat Solide. ICMMO, UMR8182, University Paris-Sud, 91405 Orsay CEDEX, France;

    Zernike Institute for Advanced Materials, Rijksuniversiteit Croningen, Nijenborgh 4, 9747 AG, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    magnetic excitations; quantum spin systems; spin ladder; anisotropic heat diffusion; thermal imaging;

    机译：磁激发;量子自旋系统;自旋梯;各向异性热扩散;热成像;

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