“Proximity” effect in the conductance of mesoscopic normal metal-superconductor structures
NTT Basic Research Laboratories, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa, 243-01 Japan
2 Institute of Radioengineering and Electronics RAS, Mokhovaya 11, Moscow 103907, Russia
Accepted: 13 April 1997
To clarify the nature of the interference effects observed in mesoscopic normal metal-superconductor structures the properties of silver wires with three types of superconducting loops at the stubs were experimentally studied. The geometry of the structures was chosen to enhance the main features of the transport in such systems and verify the models proposed for the interference phenomena. We observed behavior consistent with the proximity model. The role of the condensate, induced in the normal part by the superconductor, is discussed in the framework of this model.
PACS: 74.50.+r – Proximity effects, weak links, tunneling phenomena, and Josephson effects / 73.50.Jt – Galvanomagnetic and other magnetotransport effects (including thermomagnetic effects) / 74.80.Fp – Point contacts; SN and SNS junctions
© EDP Sciences, 1997