133 citations · 782 across the 42 of their papers we have counts for
17 papers · 1 filter
Born-limit scattering and pair-breaking crossover in d-wave superconductivity of (TMTSF)2ClO4
Shota Yano, Kazumi Fukushima, Katsuki Kinjo +8
In the quasi-one-dimensional organic unconventional superconductor (TMTSF)2ClO4, the randomness of the non-centrosymmetric ClO4 anions can be experimentally controlled by adjusting…
Pressure Induced Anomalous Metal in the Vicinity of the Superconductor Insulator Transition
Roy G. Cohen Song, Mark Nikolaevsky, Amitay Cohen +4
The Superconductor-to-Insulator Transition (SIT) in two-dimensional superconductors occurs due to a competition between superconductivity, quantum interferences, Coulomb interactio…
Superconducting and spin-density wave phases probed by scanning tunneling spectroscopy in the organic conductor
Mohammadmehdi Torkzadeh, Pascale Senzier, Claude Bourbonnais +9
By scanning tunneling microscopy (STM) we have probed the local quasi-particle density of states (DOS) of the Bechgaard salt organic superconductor in…
Transverse resistance due to electronic inhomogeneities in superconductors
Shamashis Sengupta, Alireza Farhadizadeh, Joe Youssef +8
Phase transitions in many-body systems are often associated with the emergence of spatial inhomogeneities. Such features may develop at microscopic lengthscales and are not necessa…
Spontaneous voltage peaks in superconducting Nb channels without engineered asymmetry
Shamashis Sengupta, Miguel Monteverde, Sara Loucif +3
Rectification effects in solid-state devices are a consequence of nonreciprocal transport properties. This phenomenon is usually observed in systems with broken inversion symmetry.…
Density-tuned isotherms and dynamic change at phase transition in a gate-controlled superconducting system
Shamashis Sengupta, Miguel Monteverde, Anil Murani +3
Two-dimensional electron gases in SrTiO3-based heterostructures provide a platform to study the real-time evolution of the macroscopic state with a variation of the carrier density…
Gate-tunable superconductivity at SrTiO3 surface realized by Al layer evaporation
Shamashis Sengupta, Emilie Tisserond, Florence Linez +8
Electronic properties of low dimensional superconductors are determined by many-body-effects. This physics has been studied traditionally with superconducting thin films, and in re…
Sample-based calibration for cryogenic broadband microwave reflectometry measurements
F. Couëdo, L. Bergé, L. Dumoulin +3
The characteristic frequencies of a system provide important information on the phenomena that govern its physical properties. In this framework, there has recently been renewed in…
Crossover from impurity-controlled to granular superconductivity in (TMTSF)2ClO4
Shingo Yonezawa, Claire A Marrache-Kikuchi, Klaus Bechgaard +1
Using a proper cooling procedure, a controllable amount of non-magnetic structural disorder can be introduced at low temperature in (TMTSF)2ClO4. Here we performed simultaneous mea…
Dissipative phases across the superconductor-to-insulator transition
François Couëdo, Olivier Crauste, Anne-Aëlle Drillien +4
Competing phenomena in low dimensional systems can generate exotic electronic phases, either through symmetry breaking or a non-trivial topology. In two-dimensional (2D) systems, t…
Destruction of superconductivity in disordered materials : a dimensional crossover
O. Crauste, F. Couëdo, L. Bergé +2
The disorder-induced Superconductor-to-Insulator Transition in amorphous NbSi two-dimensional thin films is studied for different niobium compositions through a v…
Effect of annealing on the superconducting properties of a-Nb(x)Si(1-x) thin films
O. Crauste, A. Gentils, F. Couëdo +5
a-Nb(x)Si(1-x) thin films with thicknesses down to 25 Å have been structurally characterized by TEM (Transmission Electron Microscopy) measurements. As-deposited or annealed films…
Tunable Superconducting Properties of a-NbSi Thin Films and Application to Detection in Astrophysics
O. Crauste, C. A. Marrache-Kikuchi, L. Berge +5
We report on the superconducting properties of amorphous NbxSi1-x thin films. The normal-state resistance and critical temperatures can be separately adjusted to suit the desired a…
Thickness-tuned Superconductor-to-Insulator Transitions under magnetic field in a-NbSi
C. A. Marrache-Kikuchi, H. Aubin, A. Pourret +4
We have studied the thickness-induced superconductor-to-insulator transition in the presence of a magnetic field for a-NbSi thin films. Analyzing the critical behavior of this syst…
A length scale for the superconducting Nernst signal above T in NbSi
A. Pourret, H. Aubin, J. Lesueur +4
We present a study of the Nernst effect in amorphous superconducting thin films of NbSi. The field dependence of the Nernst coefficient above T displays two…
Observation of the Nernst signal generated by fluctuating Cooper pairs
A. Pourret, H. Aubin, J. Lesueur +4
Long-range order is destroyed in a superconductor warmed above its critical temperature (Tc). However, amplitude fluctuations of the superconducting order parameter survive and lea…
Magnetic field-induced quantum superconductor-insulator transition in
H. Aubin, C. A. Marrache-Kikuchi, A. Pourret +4
A study of magnetic-field tuned superconductor-insulator transitions in amorphous thin films shows that quantum superconductor-insulator transitions are charac…