Hybrid Superconductor-Quantum Point Contact Devices using InSb Nanowires
arXiv:1612.01620 · doi:10.1063/1.4971394
Abstract
Proposals for studying topological superconductivity and Majorana bound states in nanowires proximity coupled to superconductors require that transport in the nanowire is ballistic. Previous work on hybrid nanowire-superconductor systems has shown evidence for Majorana bound states, but these experiments were also marked by disorder, which disrupts ballistic transport. In this letter, we demonstrate ballistic transport in InSb nanowires interfaced directly with superconducting Al by observing quantized conductance at zero-magnetic field. Additionally, we demonstrate that the nanowire is proximity coupled to the superconducting contacts by observing Andreev reflection. These results are important steps for robustly establishing topological superconductivity in InSb nanowires.
References in corpus (10)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Epitaxy of Semiconductor-Superconductor nanowires
- Tunable Supercurrent Through Semiconductor Nanowires
- Hard gap in epitaxial semiconductor-superconductor nanowires
- Quantum supercurrent transistors in carbon nanotubes
- Towards high mobility InSb nanowire devices
- Multi-mode Fabry-Pérot conductance oscillations in suspended stacking-faults-free InAs nanowires