313 citations · 1.3k across the 21 of their papers we have counts for
21 papers
Heat transport at the nanoscale and ultralow temperatures -- implications for quantum technologies
Danial Majidi, Justin P. Bergfield, Ville Maisi +3
In this perspective, we discuss thermal imbalance and the associated electron-mediated thermal transport in quantum electronic devices at very low temperatures. We first present th…
Probing Hybridization of a Single Energy Level Coupled to Superconducting Leads
D. M. T. van Zanten, H. Courtois, C. B. Winkelmann
Electron transport through a quantum dot coupled to superconducting leads shows a sharp conductance onset when a quantum dot orbital level crosses the superconducting coherence pea…
A subKelvin scanning probe microscope for the electronic spectroscopy of an individual nano-device
Thomas Quaglio, Franck Dahlem, Sylvain Martin +3
We present a combined scanning force and tunneling microscope working in a dilution refrigerator that is optimized for the study of individual electronic nano-devices. This apparat…
Efficient Quasiparticle Evacuation in Superconducting Devices
Sukumar Rajauria, L. M. A. Pascal, Ph. Gandit +3
We have studied the diffusion of excess quasiparticles in a current-biased superconductor strip in proximity to a metallic trap junction. In particular, we have measured accurately…
Noise Correlations in Three-Terminal Diffusive Superconductor-Normal Metal-Superconductor Nanostructures
B. Kaviraj, O. Coupiac, H. Courtois +1
We present measurements of current noise and cross-correlations in three-terminal Superconductor-Normal metal-Superconductor (S-N-S) nanostructures that are potential solid-state e…
Absence of boron aggregates in superconducting silicon confirmed by atom probe tomography
K. Hoummada, F. Dahlem, T. Kociniewski +7
Superconducting boron-doped silicon films prepared by gas immersion laser doping (GILD) technique are analyzed by atom probe tomography. The resulting three-dimensional chemical co…
Subkelvin tunneling spectroscopy showing Bardeen-Cooper-Schrieffer superconductivity in heavily boron-doped silicon epilayers
F. Dahlem, T. Kociniewski, C. Marcenat +8
Scanning tunneling spectroscopies in the subKelvin temperature range were performed on superconducting Silicon epilayers doped with Boron in the atomic percent range. The resulting…
Circuit approach to photonic heat transport
L. Pascal, H. Courtois, F. W. J. Hekking
We discuss the heat transfer by photons between two metals coupled by a linear element with a reactive impedance. Using a simple circuit approach, we calculate the spectral power t…
Divergence at low bias and down-mixing of the current noise in a diffusive superconductor-normal metal-superconductor junction
Elsa Lhotel, Olivier Coupiac, François Lefloch +2
We present current noise measurements in a long diffusive superconductor-normal-metal-superconductor junction in the low voltage regime, in which transport can be partially describ…
Electron and phonon Cooling in a Superconductor - Normal Metal - Superconductor Tunnel Junction
Sukumar Rajauria, P. S. Luo, T. Fournier +3
We present evidence for the cooling of normal metal phonons by electron tunneling in a Superconductor - Normal metal - Superconductor tunnel junction. The normal metal electron tem…
Electron transport in a mesoscopic superconducting / ferromagnetic hybrid conductor
M. Giroud, K. Hasselbach, H. Courtois +2
We present electrical transport experiments performed on submicron hybrid devices made of a ferromagnetic conductor (Co) and a superconducting (Al) electrode. The sample was patter…
Long-Range Coherence in a Mesoscopic Metal near a Superconducting Interface
H. Courtois, Ph. Gandit, D. Mailly +1
We identify the different contributions to quantum interference in a mesoscopic metallic loop in contact with two superconducting electrodes. At low temperature, a flux-modulated J…
Coherent low-energy charge transport in a diffusive S-N-S junction
P. Dubos, H. Courtois, O. Buisson +1
We have studied the current voltage characteristics of diffusive mesoscopic Nb-Cu-Nb Josephson junctions with highly-transparent Nb-Cu interfaces. We consider the low-voltage and h…
Local spectroscopy of a proximity superconductor at very low temperature
N. Moussy, H. Courtois, B. Pannetier
We performed the local spectroscopy of a Normal-metal--Superconductor (N-S) junction with the help of a very low temperature (60 mK) Scanning Tunneling Microscope (STM). The spatia…
The Josephson critical current in a long mesoscopic S-N-S junction
P. Dubos, H. Courtois, B. Pannetier +3
We carry out an extensive experimental and theoretical study of the Josephson effect in S-N-S junctions made of a diffusive normal metal (N) embedded between two superconducting el…
A very low temperature STM for the local spectroscopy of mesoscopic structures
N. Moussy, H. Courtois, B. Pannetier
We present the design and operation of a very-low temperature Scanning Tunneling Microscope (STM) working at in a dilution refrigerator. The STM features both atomic resolu…
Long-range coherence and mesoscopic transport in N-S metallic structures
H. Courtois, Ph. Gandit, B. Pannetier +1
We review the mesoscopic transport in a diffusive proximity superconductor made of a normal metal (N) in metallic contact with a superconductor (S). The Andreev reflection of elect…
Superconducting proximity effect in a mesoscopic ferromagnetic wire
M. Giroud, H. Courtois, K. Hasselbach +2
We present an experimental study of the transport properties of a ferromagnetic metallic wire (Co) in metallic contact with a superconductor (Al). As the temperature is decreased b…
Coherent Electron Transport in Superconducting-Normal Metallic Films
Frank K. Wilhelm, Andrei D. Zaikin, Herve Courtois +1
We study the transport properties of a quasi-two-dimensional diffusive normal metal film attached to a superconductor. We demonstrate that the properties of such films can essentia…
Resistive transport in a mesoscopic proximity superconductor
P. Charlat, H. Courtois, Ph. Gandit +3
We review transport measurements in a normal metal (N) in contact with one or two superconducting (S) islands. From the experiment, we distinguish the Josephson coupling, the mesos…
Re-entrance of the metallic conductance in a mesoscopic proximity superconductor
P. Charlat, H. Courtois, Ph. Gandit +3
We present an experimental study of the diffusive transport in a normal metal near a superconducting interface, showing the re-entrance of the metallic conductance at very low temp…