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Anomalous thermal conductivity enhancement in the mixed state of MgB2

## Anomalous thermal conductivity enhancement in the mixed state of MgB2

Yang Dong-Sheng, Wu Bai-Mei, Li Bo, Zheng Wei-Hua, Li Shi-Yan, Chen Xian-Hui, Cao Lie-Zhao
• #### Abstract

The thermal conductivity of MgB2 polycrystalline sample in the mixed state has been investigated as a function of magnetic field (0-7 T) and temperature (5-45 K). The thermal conductivity increased rapidly in low magnetic fields, and became saturation in higher fields. This behaviour correlates with the two-gap electronic structure of MgB2. Analysis indicates that the remarkable en hancement of thermal conductivity of MgB2 polycrystalline sample in the mixed state cannot be completely attributed to the electronic contribution.

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• Abstract views:  2564
• Cited By: 0
##### Publishing process
• Received Date:  27 November 2002
• Accepted Date:  22 December 2002
• Published Online:  20 August 2003

## Anomalous thermal conductivity enhancement in the mixed state of MgB2

• 1. 中国科学技术大学结构分析研究开放实验室,物理系,合肥 230026

Abstract: The thermal conductivity of MgB2 polycrystalline sample in the mixed state has been investigated as a function of magnetic field (0-7 T) and temperature (5-45 K). The thermal conductivity increased rapidly in low magnetic fields, and became saturation in higher fields. This behaviour correlates with the two-gap electronic structure of MgB2. Analysis indicates that the remarkable en hancement of thermal conductivity of MgB2 polycrystalline sample in the mixed state cannot be completely attributed to the electronic contribution.

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