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001 | 863070 | ||
005 | 20240711113815.0 | ||
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100 | 1 | _ | |a Haas, F. |0 P:(DE-HGF)0 |b 0 |
245 | _ | _ | |a Quantum interferometer based on GaAs/InAs core/shell nanowires connected to superconducting contacts |
260 | _ | _ | |a Bristol |c 2018 |b IOP Publ. |
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520 | _ | _ | |a An interferometer structure was realized based on a GaAs/InAs core/shell nanowire and Nb superconducting electrodes. Two pairs of Nb contacts are attached to the side facets of the nanowire allowing for carrier transport in three different orientations. Owing to the core/shell geometry, the current flows in the tubular conductive InAs shell. In transport measurements with superconducting electrodes directly facing each other, indications of a Josephson supercurrent are found. In contrast for junctions in diagonal and longitudinal configuration a deficiency current is observed, owing to the weaker coupling on longer distances. By applying a magnetic field along the nanowires axis pronounced h/2e flux-periodic oscillations are measured in all three contact configurations. The appearance of these oscillations is explained in terms of interference effects in the Josephson supercurrent and long-range phase-coherent Andreev reflection. |
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700 | 1 | _ | |a Rieger, T. |0 P:(DE-HGF)0 |b 3 |
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700 | 1 | _ | |a Lüth, H. |0 P:(DE-Juel1)128608 |b 5 |
700 | 1 | _ | |a Grützmacher, D. |0 P:(DE-Juel1)125588 |b 6 |
700 | 1 | _ | |a Schäpers, Th |0 P:(DE-Juel1)128634 |b 7 |e Corresponding author |
773 | _ | _ | |a 10.1088/1361-6641/aabc6d |g Vol. 33, no. 6, p. 064001 - |0 PERI:(DE-600)1361285-2 |n 6 |p 064001 - |t Semiconductor science and technology |v 33 |y 2018 |x 1361-6641 |
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