8 papers
Transport across a normal-superconducting interface: a novel probe of electron-electron interactions in the normal metal
P. Dolby, R. Seviour, C. J. Lambert
In this letter, we examine the effect of Coulomb interactions in the normal region of a normal-superconducting (N/S) mesoscopic structure, here the change from an attractive to a r…
Anomalous behaviour of S/N mesoscopic structures near T_c
S. Shapira, E. H. Linfield, C. J. Lambert +3
We observe a maximum in the conductance of Aluminum / n-GaAs junctions at temperatures 20 mK lower than the superconducting transition temperature. This is the first observation of…
Phase-coherent tunneling through mesoscopic superconductor coupled with superconducting and normal metal electrodes
A. V. Zaitsev, A. F. Volkov, S. W. D. Bailey +1
Phase-coherent diffusive transport through mesoscopic hybrid superconductor/normal metal tunneling structures is investigated. For a N-s-S two-barrier tunneling system with bulk S…
Interplay between spin-relaxation and Andreev reflection in ferromagnetic wires with superconducting contacts
Vladimir I. Fal'ko, A. F. Volkov, C. Lambert
We analyze the change in the resistance of a junction between a diffusive ferromagnetic (F) wire and normal metal electrode, due to the onset of superconductivity (S) in the latter…
Anomalous transport in normal-superconducting and ferromagnetic-superconducting nanostructures
R. Seviour, C. J. Lambert, A. F. Volkov
We have calculated the temperature dependence of the conductance variation () of mesoscopic superconductor normal metal(S/N) structures, in the diffusive regime, analysing b…
Conductance Oscillations in Transition Metal Superlattices
S. Sanvito, C. J. Lambert, J. H. Jefferson +1
We present a numerical study of conductance oscillations of transition metal multilayers as a function of layer thickness. Using a material-specific tight-binding model, we show th…