TY - JOUR

T1 - Self-consistent transport properties of superconducting nanostructures

AU - Martin, A M

AU - Lambert, C J

PY - 1996

Y1 - 1996

N2 - By solving the Bogoliubov-de Gennes equation self-consistently, we compute transport properties of various normal-superconducting mesoscopic structures. Three structures are considered; a single superconducting island, a superconducting island with a delta-function scatterer at one interface and a superconducting island with a delta-function scatterer at the centre of the island. The calculated self-consistent I-V characteristics show significant structure, arising from the competition between scattering processes at the boundaries of the island and modification of the order parameter by quasi-particles and superflow. When the order parameter is significantly modified by the transport current, it is noted that the magnitude of the differential conductance of a single-channel conductor can exceed 2e(2)/h.

AB - By solving the Bogoliubov-de Gennes equation self-consistently, we compute transport properties of various normal-superconducting mesoscopic structures. Three structures are considered; a single superconducting island, a superconducting island with a delta-function scatterer at one interface and a superconducting island with a delta-function scatterer at the centre of the island. The calculated self-consistent I-V characteristics show significant structure, arising from the competition between scattering processes at the boundaries of the island and modification of the order parameter by quasi-particles and superflow. When the order parameter is significantly modified by the transport current, it is noted that the magnitude of the differential conductance of a single-channel conductor can exceed 2e(2)/h.

U2 - 10.1007/BF02571195

DO - 10.1007/BF02571195

M3 - Journal article

VL - 46

SP - 2407

EP - 2408

JO - Czechoslovak Journal of Physics

JF - Czechoslovak Journal of Physics

SN - 0011-4626

IS - s4

ER -