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38 papers · 1 filter
Walls Inhibit Chaotic Mixing
Emmanuelle Gouillart, Natalia Kuncio, Olivier Dauchot +3
We report on experiments of chaotic mixing in a closed vessel, in which a highly viscous fluid is stirred by a moving rod. We analyze quantitatively how the concentration field of…
Trapping electrons in electrostatic traps over the surface of helium
E. Rousseau, Y. Mukharsky, D. Ponarine +2
We have observed trapping of electrons in an electrostatic trap formed over the surface of liquid helium-4. These electrons are detected by a Single Electron Transistor located at…
Effect of measurement probes upon the conductance of an interacting nanosystem: Detection of an attached ring by non local many body effects
Axel Freyn, Jean-Louis Pichard
We consider a nanosystem connected to measurement probes via leads. When a magnetic flux is varied through a ring attached to one lead at a distance Lc from the nanosystem, the eff…
Total suppression of superconductivity by high magnetic fields in YBa2 Cu3O6.6
F. Rullier-Albenque, H. Alloul, Cyril Proust +3
We have studied in fields up to 60T the variation of the transverse magnetoresistance (MR) of underdoped YBCO6.6 crystals either pure or with Tc reduced down to 3.5K by electron ir…
Non-perturbative Approach to Critical Dynamics
Léonie Canet, Hugues Chaté
This paper is devoted to a non-perturbative renormalization group (NPRG) analysis of Model A, which stands as a paradigm for the study of critical dynamics. The NPRG formalism has…
Finite size effects in the Verwey transition of magnetite thin films
Alexandre Bataille, Eric Vincent, Susana Gota +1
We report on the finite size effects in the Verwey transition of stress-free magnetite Fe3O4 thin films. A limit thickness of 20 nm is evidenced, above which the transition tempera…