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arXiv 1209.6097cond-mat.mtrl-sci
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拓扑绝缘体和热电材料

Topological insulators and thermoelectric materials

Lukas Müchler, Frederick Casper, Binghai Yan, Stanislav Chadov, Claudia Felser

摘要:

拓扑绝缘体是物质的一种新的量子态,它在体能隙内具有无隙的表面态。从二维碲化汞量子阱的发现开始,许多新的拓扑材料被理论预言和实验观察到。目前已知的TI材料可以分为两个家族,HgTe家族和Bi2Se家族。在TI的电子结构中发现的特征也使这些材料成为优异的热电材料。另一方面,优秀的热电材料也可以是拓扑平凡的。在这里,我们提出了一个简短的介绍,拓扑绝缘体和热电,并给出了化合物类的例子都是良好的热电性能和拓扑绝缘体可以找到。

英文摘要:

Topological insulators (TIs) are a new quantum state of matter which have gapless surface states inside the bulk energy gap. Starting with the discovery of two dimensional TIs, the HgTe-based quantum wells, many new topological materials have been theoretically predicted and experimentally observed. Currently known TI materials can possibly be classified into two families, the HgTe family and the Bi2Se family. The signatures found in the electronic structure of a TI also cause these materials to be excellent thermoelectric materials. On the other hand, excellent thermoelectric materials can be also topologically trivial. Here we present a short introduction to topological insulators and thermoelectrics, and give examples of compound classes were both good thermoelectric properties and topological insulators can be found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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