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Pb/InAs nanowire Josephson junction with high critical current and magnetic flux focusing

AutorPaajaste, J.; Bergeret, F. S. ; Giazotto, F.
Palabras clavePb
Nanowire
Magnetic flux focusing
Josephson effect
InAs
Fecha de publicación2015
EditorAmerican Chemical Society
CitaciónNano Letters 15(3): 1803-1808 (2015)
ResumenWe 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.
DescripciónarXiv:1411.0990v3.-- et al.
Versión del editorhttp://dx.doi.org/10.1021/nl504544s
URIhttp://hdl.handle.net/10261/136586
DOI10.1021/nl504544s
Identificadoresdoi: 10.1021/nl504544s
e-issn: 1530-6992
issn: 1530-6984
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