Publications (13)
Proximity effect between two superconductors spatially resolved by scanning tunneling spectroscopy
V. Cherkez, J. C. Cuevas, C. Brun +5
We present a combined experimental and theoretical study of the proximity effect in an atomic-scale controlled junction between two different superconductors. Elaborated on a Si(11…
Remarkable effects of disorder on superconductivity of single atomic layers of lead on silicon
C. Brun, T. Cren, V. Cherkez +8
In bulk materials superconductivity is remarkably robust with respect to non-magnetic disorder. In the two-dimensional limit however, the quantum condensate suffers from the effect…
Evidence of growing spatial correlations at the glass transition from nonlinear response experiments
C. Crauste-Thibierge, C. Brun, F. Ladieu +3
The ac nonlinear dielectric response of glycerol was measured close to its glass transition temperature to investigate the prediction that supercooled liquids re…
On the importance of measuring accurately LDOS maps using scanning tunneling spectroscopy in materials presenting atom-dependent charge order: the case of the correlated Pb/Si(111) single atomic layer
C. Tresca, T. Bilgeri, G. Menard +11
We show how to properly extract the local charge order in two-dimensional materials from scanning tunneling microscopy/spectroscopy (STM/STS) measurements. When the charge order pr…
Confinement of superconducting fluctuations due to emergent electronic inhomogeneities
C. Carbillet, S. Caprara, M. Grilli +11
The microscopic nature of an insulating state in the vicinity of a superconducting state, in the presence of disorder, is a hotly debated question. While the simplest scenario prop…
Analysis of the Scanning Tunneling Microscopy Images of the Charge Density Wave Phase in Quasi-one-dimensional Rb0.3MoO3
E. Machado-Charry, P. Ordejon, E. Canadell +2
The experimental STM images for the CDW phase of the blue bronze RbMoO3 have been successfully explained on the basis of first-principles DFT calculations. Although the density of…
Evidence of growing spatial correlations during the aging of glassy glycerol
C. Brun, F. Ladieu, L'Hôte +2
We have measured, as a function of the age , the aging of the nonlinear dielectric susceptibility of glycerol below the glass transition. Whereas the linear susceptibil…
Surface states in a 3D topological insulator: The role of hexagonal warping and curvature
E. V. Repin, V. S. Stolyarov, T. Cren +5
We explore a combined effect of hexagonal warping and of finite effective mass on both the tunneling density of electronic states (TDOS) and structure of Landau levels (LLs) of 3D…
Scanning tunneling spectroscopy study of the proximity effect in a disordered two-dimensional metal
L. Serrier-Garcia, J. C. Cuevas, T. Cren +6
The proximity effect between a superconductor and a highly diffusive two-dimensional metal was revealed in a Scanning Tunneling Spectroscopy experiment. The in-situ elaborated samp…
Break-up of long-range coherence due to phase fluctuations in ultrathin superconducting NbN films
Y. Noat, T. Cren, C. Brun +7
Using scanning tunneling spectroscopy (STS), we address the problem of the superconductor-insulator phase transition (SIT) in homogeneously disordered ultrathin (2-15 nm) films of…
Study of the heating effect contribution to the nonlinear dielectric response of a supercooled liquid
C. Brun, C. Crauste-Thibierge, F. Ladieu +1
We present a detailed study of the heating effects in dielectric measurements carried out on a liquid. Such effects come from the dissipation of the electric power in the liquid an…
Spectroscopic evidence for strong correlations between local superconducting gap and local Altshuler-Aronov density-of-states suppression in ultrathin NbN films
C. Carbillet, V. Cherkez, M. A. Skvortsov +10
Disorder has different profound effects on superconducting thin films. For a large variety of materials, increasing disorder reduces electronic screening which enhances electron-el…
Chiral spin texture in the charge-density-wave phase of the correlated metallic Pb/Si(111) monolayer
C. Tresca, C. Brun, T. Bilgeri +10
We investigate the 1/3 monolayer -Pb/Si(111) surface by scanning tunneling spectroscopy (STS) and fully relativistic first-principles calculations. We study both the high-tempe…