Enhancement of thermal conductivity across the metal-insulator transition in vanadium dioxide
Enhancement of thermal conductivity across the metal-insulator transition in vanadium dioxide
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DOI：
10.1063/1.5042089
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发表时间：
2018-08
影响因子：
4
通讯作者：
Lu Chen;Z. Xiang;C. Tinsman;T. Asaba;Qing Huang;Haidong Zhou;Lu Li
中科院分区：
文献类型：
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作者：
Lu Chen;Z. Xiang;C. Tinsman;T. Asaba;Qing Huang;Haidong Zhou;Lu Li
通过电输运和热输运测量研究了二氧化钒（VO 2）的金属-绝缘体转变（MIT）。我们报告了一个数量级的增强整个MIT区域的VO 2单晶的热导率。磁场相关的测量结果表明，热导率峰对磁场的依赖性不明显，表明热导率的增强可能来自于声子等中性热载流子。本实验为相变材料的热管理提供了一个方向。通过电学和热输运测量研究了二氧化钒（VO 2）的金属-绝缘体转变（MIT）。我们报告了一个数量级的增强整个MIT区域的VO 2单晶的热导率。磁场相关的测量结果表明，热导率峰对磁场的依赖性不明显，表明热导率的增强可能来自于声子等中性热载流子。本实验为实现相变材料的热管理提供了方向。
Metal-to-insulator transition (MIT) in vanadium dioxide (VO2) was investigated by electrical and thermal transport measurements. We report an order-of-magnitude enhancement of thermal conductivity across the MIT region in the VO2 single crystal. The magnetic field dependent measurement reveals that the thermal conductivity peak does not show an obvious dependence on the magnetic field, which indicates that the enhancement of thermal conductivity could come from neutral heat carriers such as phonons. Our experiment provides a direction of achieving thermal management in phase-change materials.Metal-to-insulator transition (MIT) in vanadium dioxide (VO2) was investigated by electrical and thermal transport measurements. We report an order-of-magnitude enhancement of thermal conductivity across the MIT region in the VO2 single crystal. The magnetic field dependent measurement reveals that the thermal conductivity peak does not show an obvious dependence on the magnetic field, which indicates that the enhancement of thermal conductivity could come from neutral heat carriers such as phonons. Our experiment provides a direction of achieving thermal management in phase-change materials.