Very Strong Superconducting Proximity Effects in PbS Semiconductor Nanowires
arXiv:1607.07151 · doi:10.1021/acsnano.6b04774
Abstract
We report the fabrication of strongly coupled nanohybrid superconducting junctions using PbS semiconductor nanowires and Pb0.5In0.5 superconducting electrodes. The maximum supercurrent in the junction reaches up to ~15 μA at 0.3 K, which is the highest value ever observed in semiconductor-nanowire-based superconducting junctions. The observation of microwave-induced constant voltage steps confirms the existence of genuine Josephson coupling through the nanowire. Monotonic suppression of the critical current under an external magnetic field is also in good agreement with the narrow junction model. The temperature-dependent stochastic distribution of the switching current exhibits a crossover from phase diffusion to a thermal activation process as the temperature decreases. These strongly coupled nanohybrid superconducting junctions would be advantageous to the development of gate-tunable superconducting quantum information devices.
arXiv comment32 pages
References in corpus (23)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Tunable Supercurrent Through Semiconductor Nanowires
- Supercurrent reversal in quantum dots
- A Semiconductor Nanowire-Based Superconducting Qubit
- Quantum supercurrent transistors in carbon nanotubes
- The Josephson critical current in a long mesoscopic S-N-S junction
- Ge/Si nanowire mesoscopic Josephson junctions
- Realization of microwave quantum circuits using hybrid superconducting-semiconducting nanowire Josephson elements
- A Josephson Quantum Electron Pump
- Proximity DC squids in the long junction limit
- Magnetic Interference Patterns and Vortices in Diffusive SNS junctions
- Collapse of thermal activation in moderately damped Josephson junctions
- Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction
- Electrically Tunable Macroscopic Quantum Tunneling in a Graphene-based Josephson Junction
- Crossover from Kramers to phase-diffusion switching in hysteretic DC-SQUIDs
- Anticorrelation between temperature and fluctuations in moderately damped Josephson junctions
- Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing
- Andreev reflection versus Coulomb blockade in hybrid semiconductor nanowire devices
- Hybrid InAs nanowire-vanadium proximity SQUID
- Josephson supercurrent in Nb/InN-nanowire/Nb junctions
- Origin of Hysteresis in a Proximity Josephson Junction
- Gate-tunable superconducting quantum interference devices of PbS nanowires
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- Electrostatic control of phase slips in Ti Josephson nanotransistors
- Short Ballistic Josephson Coupling in Planar Graphene Junctions with Inhomogeneous Carrier Doping
- Josephson effect in a few-hole quantum dot
- Macroscopic Quantum Tunneling in Superconducting Junctions of β-AgSe Topological Insulator Nanowire
- Flux periodic oscillations and phase-coherent transport in GeTe nanowire-based devices
- Superconducting Quantum Interference Devices Made of Sb-doped Bi2Se3 Topological Insulator Nanoribbons
- Multiple Andreev reflections in topological insulator nanoribbons
- Thouless energy in Josephson SN-N-NS bridges
- Theory for electron and hole fine structure and Landé g-factors in lead chalcogenide nanowires