Weyl points in multiterminal hybrid superconductor-semiconductor nanowire devices
E. V. Repin (TU Delft - Applied Sciences, Kavli institute of nanoscience Delft)
Y. V. Nazarov (TU Delft - Applied Sciences, Kavli institute of nanoscience Delft)
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Abstract
The technology of superconductor-semiconductor nanowire devices has matured in recent years. This makes it feasible to make more complex and sophisticated devices. We investigate multiterminal superconductor-semiconductor wires to access the feasibility of another topological phenomenon: Weyl singularities in their spectrum. We have found an abundance of Weyl singularities for devices with an intermediate size of the electrodes. We describe their properties and the ways the singularities emerge and disappear upon variation of the setup parameters.