Topological tubes and wires and their hybrids


(A08)

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.