75 citations · 99 across the 4 of their papers we have counts for
6 papers
Analog information processing at the quantum limit with a Josephson ring modulator
N. Bergeal, R. Vijay, V. E. Manucharyan +4
Amplifiers are crucial in every experiment carrying out a very sensitive measurement. However, they always degrade the information by adding noise. Quantum mechanics puts a limit o…
Improving HTc Josephson Junctions (HTc JJ) by annealing: the role of vacancy-interstitial annihilation
M. Sirena, S. Matzen, N. Bergeal +4
We have studied the annealing effect in transport properties of High temperature Josephson Junctions (HTc JJ) made by ion irradiation. Low temperature annealing (80 degrees Celsius…
Study and optimization of ion-irradiated High-Tc Josephson nanoJunctions by Monte Carlo simulations
M. Sirena, N. Bergeal, J. Lesueur +5
High Tc Josephson nanoJunctions (HTc JnJ) made by ion irradiation have remarkable properties for technological applications. However, the spread in their electrical characteristics…
Scanning Tunneling Spectroscopy on the novel superconductor CaC6
N. Bergeal, V. Dubost, Y. Noat +7
We present scanning tunneling microscopy and spectroscopy of the newly discovered superconductor CaC. The tunneling conductance spectra, measured between 3 K and 15 K, show a c…
Direct test of pairing fluctuations in the pseudogap phase of underdoped cuprates
N. Bergeal, J. Lesueur, M. Aprili +3
We report on a direct test of pairing fluctuations in the pseudogap regime of underdoped superconducting cuprates using a Josephson junction. In this experiment, the coupling betwe…
High-Quality Planar high-Tc Josephson Junctions
N. Bergeal, X. Grison, J. Lesueur +3
Reproducible high-Tc Josephson junctions have been made in a rather simple two-step process using ion irradiation. A microbridge (1 to 5 ?m wide) is firstly designed by ion irradia…