Proximity effect in planar TiN-Silicon junctions (2007)
Quirion, D., Lefloch, F., Sanquer, M.
We measured the low temperature subgap resistance of titanium nitride (superconductor, Tc=4.6K)/highly doped silicon (degenerated semiconductor) SIN junctions, where I stands for the Schottky...
Spatially resolved spectroscopy on a superconducting proximity structure (2006)
Vinet, M., Chapelier, C., Lefloch, F.
We investigated the local density of states (LDOS) of a normal metal (N) in good electrical contact with a superconductor (S) as a function of the distance $x$ to the NS interface. The sample...
Ballistic effects in a proximity induced superconducting diffusive metal (2005)
Escoffier, W., Chapelier, C., Lefloch, F.
Using a Scanning Tunneling Microscope (STM), we investigate the Local Density of States (LDOS) of artificially fabricated normal metal nano-structures in contact with a superconductor. Very low...
Cretinon, L., Gupta, A. K., Sellier, H., Lefloch, F., Faure, M., Buzdin, A., ...
We studied the proximity effect between a superconductor (Nb) and a diluted ferromagnetic alloy (CuNi) in a bilayer geometry. We measured the local density of states on top of the ferromagnetic...
Mesoscopic transition in the shot noise of diffusive S/N/S junctions (2004)
Hoffmann, C., Lefloch, F., Sanquer, M., Pannetier, B.
We experimentally investigated the current noise in diffusive Superconductor/Normal metal/Superconductor junctions with lengths between the superconducting coherence length xi_Delta and the phase...
Half-integer Shapiro steps at the 0-pi crossover of a ferromagnetic Josephson junction (2004)
Sellier, H., Baraduc, C., Lefloch, F., Calemczuk, R.
We investigate the current-phase relation of S/F/S junctions near the crossover between the 0 and the pi ground states. We use Nb/CuNi/Nb junctions where this crossover is driven both by thickness...
Inelastic relaxation and noise temperature in S/N/S junctions (2002)
Hoffmann, C., Lefloch, F., Sanquer, M.
We studied electronic relaxation in long diffusive superconductor / normal metal / superconductor (S/N/S) junctions by means of current noise and transport measurements down to very low temperature...
Doubled Full Shot Noise in Quantum Coherent Superconductor - Semiconductor Junctions (2002)
Lefloch, F., Hoffmann, C., Sanquer, M., Quirion, D.
We performed low temperature shot noise measurements in Superconductor (TiN) - strongly disordered normal metal (heavily doped Si) weakly transparent junctions. We show that the conductance has a...
Mesoscopic proximity effect in double barrier Superconductor/Normal Metal junctions (2002)
Quirion, D., Hoffmann, C., Lefloch, F., Sanquer, M.
We report transport measurements down to T=60mK of SININ and SNIN structures in the diffusive limit. We fabricated Al-AlOx/Cu/AlOx/Cu (SININ) and Al/Cu/AlOx/Cu (SNIN) vertical junctions. For the...
Spatially resolved spectroscopy on a superconducting proximity structure (2000)
Vinet, M., Chapelier, C., Lefloch, F.
We investigated the local density of states (LDOS) of a normal metal (N) in good electrical contact with a superconductor (S) as a function of the distance $x$ to the NS interface. The sample...
Proximity effect in planar TiN-Silicon junctions (2000)
Quirion, D., Lefloch, F., Sanquer, M.
We measured the low temperature subgap resistance of titanium nitride (superconductor, Tc=4.6K)/highly doped silicon (degenerated semiconductor) SIN junctions, where I stands for the Schottky...
Spatially resolved spectroscopy on a superconducting proximity structure (2000)
Vinet, M., Chapelier, C., Lefloch, F.
We investigated the local density of states (LDOS) of a normal metal (N) in good electrical contact with a superconductor (S) as a function of the distance $x$ to the NS interface. The sample...
Spatially resolved spectroscopy on a superconducting proximity structure (2000)
Vinet, M., Chapelier, C., Lefloch, F.
We investigated the local density of states (LDOS) of a normal metal (N) in good electrical contact with a superconductor (S) as a function of the distance $x$ to the NS interface. The sample...
Proximity effect in planar Superconductor/Semiconductor junction (1999)
Lefloch, F., Quirion, D., Sanquer, M.
We have measured the very low temperature (down to 30 mK) subgap resistance of Titanium Nitride (Superconductor, Tc = 4.6 K)/highly doped Silicon (Semiconductor) SIN junction (the insulating layer...
Non linear flux flow in TiN superconducting thin film (1999)
Lefloch, F., Hoffmann, C., Demolliens, O.
We have studied the superconducting behavior of 100 nm Titanium Nitride (TiN) thin film in a perpendicular magnetic field. We found a zero field transition temperature of 4.6 K and a slope in the H-T...