365 citations · 862 across the 12 of their papers we have counts for
7 papers · 1 filter
Molecular states in carbon nanotube double quantum dots
M. R. Graeber, W. A. Coish, C. Hoffmann +5
We report electrical transport measurements through a semiconducting single-walled carbon nanotube (SWNT) with three additional top-gates. At low temperatures the system acts as a…
Electric Field Control of Spin Transport
Sangeeta Sahoo, Takis Kontos, Jürg Furer +4
Spintronics is an approach to electronics in which the spin of the electrons is exploited to control the electric resistance R of devices. One basic building block is the spin-valv…
Shot-noise and conductance measurements of transparent superconductor / two-dimensional electron gas junctions
B. -R. Choi, A. E. Hansen, T. Kontos +6
We have measured the conductance and shot-noise of superconductor-normal metal (S-N) junctions between a Niobium (Nb) film and a 2-dimensional electron gas (2DEG), formed in an InA…
Mesoscopic transition in the shot noise of diffusive S/N/S junctions
C. Hoffmann, F. Lefloch, M. Sanquer +1
We experimentally investigated the current noise in diffusive Superconductor/Normal metal/Superconductor junctions with lengths between the superconducting coherence length xi_Delt…
Inelastic relaxation and noise temperature in S/N/S junctions
C. Hoffmann, F. Lefloch, M. Sanquer
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 ver…
Doubled Full Shot Noise in Quantum Coherent Superconductor - Semiconductor Junctions
F. Lefloch, C. Hoffmann, M. Sanquer +1
We performed low temperature shot noise measurements in Superconductor (TiN) - strongly disordered normal metal (heavily doped Si) weakly transparent junctions. We show that the co…
Mesoscopic proximity effect in double barrier Superconductor/Normal Metal junctions
D. Quirion, C. Hoffmann, F. Lefloch +1
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 junc…