论文标题
1D拓扑状态可以解释BI 2 TE 3的非凡热电特性吗？在tomonaga-luttinger液体（TLL）框架中的精确分析解决方案
Can 1D topological states explain the extraordinary thermoelectric properties of Bi 2 Te 3 ? An exact analytical solution in the Tomonaga-Luttinger liquids (TLLs) framework
论文作者
论文摘要
拓扑绝缘子通常也是最著名的热电材料之一。最近已经发现，在3D拓扑绝缘子中，每个偏斜位错可以托管一对螺旋状螺旋态。我们为TLL中的热电Seebeck系数提供精确的分析公式，并在多大程度上将BI 2 TE 3的出色热电特性归因于这些1D拓扑状态。为此，我们采用一个密集的错位网络的模型，并找到一个分析公式，以在1D（TLL）和3D电子状态之间重叠。我们的研究适用于弱N型BI 2 TE 3，但也适用于具有人工创建的1D系统的更广泛的纳米结构材料。此外，我们的结果可在有限频率设置上使用，例如捕获通过照片激活的运输。
Topological insulators are frequently also one of the best known thermoelectric materials. It has been recently discovered that in 3D topological insulators each skew dislocation can host a pair of 1D topological states a helical TLL. We derive exact analytical formulas for thermoelectric Seebeck coefficient in TLL and investigate up to what extent one can ascribe the outstanding thermoelectric properties of Bi 2 Te 3 to these 1D topological states. To this end we take a model of a dense dislocation network and find an analytic formula for an overlap between 1D (the TLL) and 3D electronic states. Our study is applicable to a weakly n-doped Bi 2 Te 3 but also to a broader class of nano-structured materials with artificially created 1D systems. Furthermore, our results can be used at finite frequency settings e.g. to capture transport activated by photo-excitations.
