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Showing 1 to 4 of 4 for “"multiple Andreev reflection"”.
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Towards the fabrication of suspended superconductor-graphene-superconductor Josephson junctions
… Josephson junctions which exhibit multiple Andreev reflection at temperatures of 4 K. and a Dirac peak near -0.4 V, all without any annealing of the graphene. We have also developed an annealing and lithography process which can clean graphene and preserve its cleaness during the …
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Investigations of Crossed Andreev Reflection in Hybrid Superconductor-Ferromagnet Structures
… for signatures of this process, called crossed Andreev reflection (CAR), in three device geometries. The first devices studied are lateral spin valves. In these structures, when electrons with energies less than the superconducting energy gap are injected from one ferromagnetic wire into the …
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Magnetotransport in superconductor to semiconductor junctions: multiple Andreev reflections and coupling to quantum hall states
… showed peaks in differential resistance due to multiple Andreev reflection. As the magnetic field is increased, the MAR peaks move toward lower voltages and disappear. The movement of the peaks is caused by the decrease of the superconducting gap with field.
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Electronic and optical properties of thin-film superconductors and superconductor - semiconductor interfaces
… with A. Shnirlnan, a theoretical model for the Andreev reflection contributions to the current at the SN interfaces is developed using the tunneling Hamiltonian method. Both, the interference due to multiple Andreev reflection, and the electron-electron interaction in the normal metal, …