Induced superconductivity in HgTe nanowires

HgTe 纳米线的诱导超导

• 批准号: 238115510
• 负责人: Professor Dr. Laurens W. Molenkamp
• 金额: --
• 依托单位: Lehrstuhl für Experimentelle Physik III
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/238115510?language=en
• 关键词: Induced; superconductivity; HgTe; nanowires

The combination of topological insulators and superconductivity is predicted to lead to the existence of so called Majorana Fermion states. Majorana particles are their own anti-particle and are a prime candidate for the realization of topological quantum computation due to their non-abelian exchange statistics. A very promising route for the realization of Majorana Fermions is the combination of topological insulator nanowires and s-wave superconductors.The main objective of the second funding period is the investigation of superconductor/topological insulator hybrid structures in which we will search for signatures of unconventional superconductivity. HgTe nanowires are a promising candidate for such effects due to their topological insulator nature. We will specifically search for signatures of Majorana Fermions in these structures. For this purpose we will optimize our nanowires for low charge carrier densities and low defect densities. The investigations will be mainly carried out by means of electron transport.

拓扑绝缘体和超导性的结合被预测会导致所谓的马约拉纳费米子态的存在。Majorana粒子是它们自己的反粒子，由于它们的非阿贝尔交换统计，它们是实现拓扑量子计算的主要候选者。拓扑绝缘体纳米线和s波超导体的结合是实现马约拉纳费米子的一个非常有前途的途径。第二个资助期的主要目标是研究超导体/拓扑绝缘体混合结构，我们将在其中寻找非传统超导性的特征。碲化汞纳米线是一个有前途的候选人，由于其拓扑绝缘体的性质，这样的效果。我们将专门在这些结构中寻找马约拉纳费米子的签名。为此，我们将优化我们的纳米线低电荷载流子密度和低缺陷密度。这些研究将主要通过电子输运进行。