4 research outputs found
Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing
arXiv:1411.0990v3.-- et al.We have studied mesoscopic Josephson junctions formed by highly n-doped InAs nanowires and superconducting Ti/Pb source and drain leads. The current-voltage properties of the system are investigated by varying temperature and external out-of-plane magnetic field. Superconductivity in the Pb electrodes persists up to ∼7 K and with magnetic field values up to 0.4 T. Josephson coupling at zero backgate voltage is observed up to 4.5 K and the critical current is measured to be as high as 615 nA. The supercurrent suppression as a function of the magnetic field reveals a diffraction pattern that is explained by a strong magnetic flux focusing provided by the superconducting electrodes forming the junction.Partial financial support from the Marie Curie Initial Training Action (ITN) Q-NET 264034 and the Tuscany region through the project :TERASQUID” is acknowledged. The work of F.G. has been partially funded by the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant 615187-COMANCHE. The work of F.S.B. was supported by the Spanish Ministry of
Economy and Competitiveness under Projects No. FIS2011-28851-C02-02.Peer Reviewe
Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing
We have studied mesoscopic Josephson junctions formed by highly -doped
InAs nanowires and superconducting Ti/Pb source and drain leads. The
current-voltage properties of the system are investigated by varying
temperature and external out-of-plane magnetic field. Superconductivity in the
Pb electrodes persists up to K and with magnetic field values up to
0.4 T. Josephson coupling at zero backgate voltage is observed up to 4.5 K and
the critical current is measured to be as high as 615 nA. The supercurrent
suppression as a function of the magnetic field reveals a diffraction pattern
that is explained by a strong magnetic flux focusing provided by the
superconducting electrodes forming the junction.Comment: 6 pages, 5 color figure
Pb/InAs nanowire josephson junction with high critical current and magnetic flux focusing
We have studied mesoscopic Josephson junctions formed by highly n-doped InAs nanowires and superconducting Ti/Pb source and drain leads. The current-voltage properties of the system are investigated by varying temperature and external out-of-plane magnetic field. Superconductivity in the Pb electrodes persists up to ∼7 K and with magnetic field values up to 0.4 T. Josephson coupling at zero backgate voltage is observed up to 4.5 K and the critical current is measured to be as high as 615 nA. The supercurrent suppression as a function of the magnetic field reveals a diffraction pattern that is explained by a strong magnetic flux focusing provided by the superconducting electrodes forming the junction