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Pressure Bridge for Connecting Thermoelectricity and Superconductivity(陈晓嘉研究员 北京高压科学研究中心)
发布时间: 2018-10-23 浏览次数: 13

【报告题目】Pressure Bridge for Connecting Thermoelectricity and Superconductivity

【报告人】  陈晓嘉研究员 北京高压科学研究中心

【报告时间】1024日(周三)下午14:30-15:30

【报告地点】科技楼 29-414

【报告内容】Both thermoelectricity and superconductivity are two important phenomena for energy efficiency applications. Thermoelectric materials can directly generate electric power by converting waste heat, and the efficiency is appraised by the figure of merit. A high figure of merit larger than 3 is required to achieve comparable efficiency of the traditional heat engines. Here, we choose several semiconductors or semimetals as examples to show the extremely important role of pressure on both phenomena. The general increase of the figure of merit is realized in these materials by the application of pressure based on the newly developed high-pressure techniques. Meanwhile, superconductivity is induced in these materials upon further compression. The natural bridge connecting superconductivity and thermoelectricity is thus built. These findings not only demonstrate the remarkable role of pressure played in improving the performance of thermoelectric materials but also offer a new route for finding superconductors from highly efficient thermoelectric materials.

【报告人简介】陈晓嘉博士,北京高压科学研究中心研究员,国家长期创新项目特聘专家。1990年毕业于河南信阳师范大学物理系,1993年获得河南师范大学理论物理专业硕士学位,1997年毕业于浙江大学物理系,获凝聚态物理专业博士学位,1997年至1999年先后在南京大学,香港中文大学开展博士后研究。之后赴德国和美国开展学术研究,其中1999年至2001年在德国马克斯普朗克固态所,2001年至2003年在美国肯特州立大学,2003年至2014年任职于美国华盛顿卡耐基研究院地球物理研究所。于2014年初全职回国工作。研究集中在超导材料和超导电性,强调压力在调节超导电性以及揭示超导物理机制方面的作用。在包括Nature, Review of Modern Physics, Physical Review Letters等学术刊物上共发表约150多篇学术论文。

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