论文标题
拓扑绝缘体中热电上的新兴拓扑字段和相对论声子
Emergent topological fields and relativistic phonons within the thermoelectricity in topological insulators
论文作者
论文摘要
拓扑边缘状态预计将负责拓扑绝缘子的高效热电响应，这是目前最好的热电材料。但是，为了解释他们的拓扑电子共存，熵和声子不能独立考虑。在将电动力学和拓扑结合在一起的背景中，通过拓扑内在场的表达，我们处理拓扑表面内的相对论声子，显示了它们调节频带的浆果曲率的能力，然后在热电效应中起着基本作用。最后，我们展示了这种相对论热激发下的拓扑绝缘子如何保持时间逆转对称性，从而可以在高温下观察高功绩。这个新的内在拓扑领域和其他约束的出现适合于实验后果开放新的可能性，以提高这种拓扑效应对基于其技术的效率。
Topological edge states are predicted to be responsible for the high efficient thermoelectric response of topological insulators, currently the best thermoelectric materials. However, to explain their figure of merit the coexistence of topological electrons, entropy and phonons can not be considered independently. In a background that puts together electrodynamics and topology, through an expression for the topological intrinsic field, we treat relativistic phonons within the topological surface showing their ability to modulate the Berry curvature of the bands and then playing a fundamental role in the thermoelectric effect. Finally, we show how the topological insulators under such relativistic thermal excitations keep time reversal symmetry allowing the observation of high figures of merit at high temperatures. The emergence of this new intrinsic topological field and other constraints are suitable to have experimental consequences opening new possibilities of improving the efficiency of this topological effect for their based technology.
