70 citations · 298 across the 28 of their papers we have counts for
19 papers · 1 filter
Zero-bias anomalies on SrLaCuO thin films
L. Fruchter, F. Bouquet, Z. Z. Li
High-impedance contacts made on the surface of SrLaCuO superconducting thin films systematically display a zero-bias anomaly. We consider two-level systems (T…
Point-Contact spectroscopy on electron-doped SrLaCuO thin films
L. Fruchter, F. Bouquet, Z. Z. Li
We report on the spectra of point-contacts made on SrLaCuO thin films. Besides a clear evidence for the superconducting gap, we discuss the origin of specific…
Electric--field effect on electron-doped infinite-layer SrLaCuO thin films
L. Fruchter, F. Bouquet, Z. Z. Li
We have used the electric--field effect to modulate the resistivity of the surface of underdoped SrLaCuO thin films, allowing opposite modifications of th…
Anisotropy of the in-plane angular magnetoresistance of electron-doed Sr1-xLaxCuO2 thin films
V. P. Jovanović, L. Fruchter, Z. Z. Li +1
Signatures of antiferromagnetism (AF) in the underdoped Ln2-xCexCuO4 (Ln = Nd, Pr,...) family are observed even for doping levels for which superconductivity exists. We have looked…
Penetration depth of electron-doped-infinite-layer SrLaCuO thin films
L. Fruchter, V. Jovanovic, H. Raffy +3
The in-plane penetration depth of SrLaCuO thin films at various doping obtained from oxygen reduction has been measured, using AC susceptibility measureme…
Non linear transport properties of an insulating YBCO nano-bridge
L. Fruchter, A. Kazumov, J. Briatico +2
We have investigated the transport properties of an insulating sub-micrometric YBa2Cu3O7-d bridge, patterned on a thin film. As expected for a variable-range-hopping insulator, tra…
Magnetoresistance and Hall effect in e-doped superconducting SrLaCuO thin films
V. Jovanovic, Z. Z. Li, F. Bouquet +2
We have epitaxially grown c-axis oriented SrxLa1-xCuO2 thin films by rf sputtering on KTaO3 substrates with x = 0.12. The as-grown deposits are insulating and a series of supercond…
Characterizing the insulator adjacent to the superconductor in BiSrLaCuO ()
L. Fruchter, Z. Z. Li, H. Raffy
The time-averaged and low--frequency noise transport properties were investigated in the vicinity of the superconductor--insulator transition for a BiSrLaCuO$_{6+…
Resistance noise in Bi_2Sr_2CaCu_2O
L. Fruchter, H. Raffy, Z. Z. Li
The resistance noise in a Bi_2Sr_2CaCu_2O thin film is found to increase strongly in the underdoped regime. While the increase of the raw resistance noise with decreasing t…
Influence of Disorder on the Hall Effect in BiSrCuO
L. Fruchter, H. Raffy, F. Bouquet +1
The in-plane resistivity and Hall coefficient have been measured for the single-layer compound BiSrCuO for the whole range of doping states. The deviation of the Ha…
Upper critical field from normal state fluctuations in BiSrCuO
F. Bouquet, L. Fruchter, I. Sfar +2
The in-plane magnetoresistance of an epitaxial BiSrCuO thin film was systematically investigated as a function of doping, above . The orbital magnetoconductanc…
Current dependent fluctuations in a BiSrCuO thin film
I. Sfar, Z. Z. Li, F. Bouquet +2
The current dependence of the excess conductivity is measured up to for a BiSrCuO thin film, as a function of doping. It is found to be anomalously s…
Thermodynamics of the vortex liquid in heavy ion-irradiated superconductors
Cornelis J. van der Beek, Marcin Konczykowski, Luc Fruchter +4
It is shown that the large effect of heavy ion-irradiation on the thermodynamical properties of the anisotropic superconductor YBaCuO extends well into the supe…
Non linear excess conductivity of BiSrCaCuO (n = 1,2), thin films
L. Fruchter, I. Sfar, F. Bouquet +2
The suppression of excess conductivity with electric field is studied for BiSrCaCuO ( = 1, 2) thin films. A pulse-probe technique is used, which a…
Continuous melting of a driven two-dimensional flux lattice with strong pins
L. Fruchter
The phase diagram of a driven two-dimensional vortex lattice in the presence of dense quasi-point pins is investigated. The transition from the crystal to the liquid is found conti…
Transition to plastic motion as a critical phenomenon and anomalous interface layer of a 2D driven vortex lattice
L. Fruchter
The dynamic transition between the ordered flow and the plastic flow is studied for a two-dimensional driven vortex lattice, in the presence of sharp and dense pinning centers, fro…
Metastable states of a driven flux lattice in a superconductor with strong pins
L. Fruchter
The flux lattice driven by a uniform driving force in a superconductor with hot, strong, sharp and randomly distributed pinning centers, with applied magnetic field half the matchi…
Fluid and plastic flow dynamics of the critical state for a strongly pinned 2D superconductor
D. Monier, L. Fruchter
We present simulations of the dynamic critical state for a 2D superconductor with strong pinning centers, corresponding to a matching field twice the applied magnetic field. The sh…
Evidence for an angular dependent contribution from columnar defects to the equilibrium magnetization of YBa_2Cu_3O_{7-d}
B. Hayani, S. T. Johnson, L. Fruchter +1
We have measured an angle-dependent contribution to the equilibrium magnetization of a YBa_2Cu_3O_{7-d} single crystal with columnar defects created by 5.8GeV Pb ions. This contrib…