Topological tubes and wires and their hybrids (A08)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 314695032

Within this project we plan to realize and investigate a platform to explore topological surface states in Bi-based wires and epitaxially grown tube structures. Wires and tubes are characterized by a unique electronic energy spectrum. This spectrum combined with a superconductor gives rise to tunable topological superconductivity. In the corners of the hexagonal tubes hinge states might form. Within this project we plan to investigate topological superconductivity in these systems by means of the anomalous (fractional) ac-Josephson effect and the existence of topological hinge states using spin-pumping as a spectroscopic tool.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1277: Emergent Relativistic Effects in Condensed Matter: From Fundamental Aspects to Electronic Functionality
• Major Instrumentation: Table-Top Maskless Aligner
• Applicant Institution: Universität Regensburg
• Project Heads: Professor Dr. Christian Back; Dr. Matthias Kronseder; Professor Dr. Dieter Weiss