Supercurrent and multiple Andreev reflections in an InSb nanowire Josephson junction
arXiv:1204.3936 · doi:10.1021/nl203380w
Abstract
Epitaxially grown, high quality semiconductor InSb nanowires are emerging material systems for the development of high performance nanoelectronics and quantum information processing and communication devices, and for the studies of new physical phenomena in solid state systems. Here, we report on measurements of a superconductor-normal conductor-superconductor junction device fabricated from an InSb nanowire with aluminum based superconducting contacts. The measurements show a proximity induced supercurrent flowing through the InSb nanowire segment, with a critical current tunable by a gate, in the current bias configuration and multiple Andreev reflection characteristics in the voltage bias configuration. The temperature dependence and the magnetic field dependence of the critical current and the multiple Andreev reflection characteristics of the junction are also studied. Furthermore, we extract the excess current from the measurements and study its temperature and magnetic field dependences. The successful observation of the superconductivity in the InSb nanowire based Josephson junction device indicates that InSb nanowires provide an excellent material system for creating and observing novel physical phenomena such as Majorana fermions in solid state systems.
19 pages, 4 figures
References in corpus (5)
- Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
- Tunable Supercurrent Through Semiconductor Nanowires
- Supercurrent reversal in quantum dots
- Search for Majorana fermions in multiband semiconducting nanowires
- Signatures of Wigner Localization in Epitaxially Grown Nanowires
Cited by in corpus (20)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
- Anomalous Josephson effect induced by spin-orbit interaction and Zeeman effect in semiconductor nanowires
- SNS junctions in nanowires with spin-orbit coupling: role of confinement and helicity on the sub-gap spectrum
- Parity independence of the zero-bias conductance peak in a nanowire based topological superconductor-quantum dot hybrid device
- A perspective on semiconductor-based superconducting qubits
- Josephson Current through Semiconductor Nanowire with Spin-Orbit Interaction in Magnetic Field
- Long-Range Spin-Triplet Correlations and Edge Spin Currents in Diffusive Spin-Orbit Coupled SNS Hybrids with a Single Spin-Active Interface
- Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing
- Study of 0- phase transition in hybrid superconductor-InSb nanowire quantum dot devices
- Measurements of strain and bandgap of coherently epitaxially grown wurtzite InAsP-InP core-shell nanowires
- Transport through Majorana nanowires attached to normal leads
- Nb/InAs nanowire proximity junctions from Josephson to quantum dot regimes
- MBE growth of self-assisted InAs nanowires on graphene
- Magnetic anisotropy of critical current in nanowire Josephson junction with spin-orbit interaction
- Superconductor-quantum dot hybrid coolers
- Tunnel spectroscopy of Majorana bound states in topological superconductor-quantum dot Josephson junctions
- Edge states, Majorana fermions and topological order in superconducting wires with generalized boundary conditions
- Fabrication and characterization of InSb nanosheet/hBN/graphite heterostructure devices
- Nonequilibrium Spectroscopy of Topological Edge Liquids