378 citations · 1.5k across the 21 of their papers we have counts for
6 papers · 1 filter
Separation of time and length scales in spin-glasses: temperature as a microscope
Jean-Philippe Bouchaud, Vincent Dupuis, Jacques Hammannn +1
We summarize the different puzzles raised by aging experiments of spin-glasses and their various interpretations. We try to reconcile the `real space', droplet like pictures with t…
Low-Temperature Features of Nano-Particle Dynamics
R. Sappey, E. Vincent, M. Ocio +1
In view of better characterizing possible quantum effects in the dynamics of nanometric particles, we measure the effect on the relaxation of a slight heating cycle. The effect of…
A new experimental procedure for characterizing quantum effects in small magnetic particle systems
R. Sappey, E. Vincent, M. Ocio +4
A new experimental procedure is discussed, which aims at separating thermal from quantum behavior independently of the energy barrier distribution in small particle systems. Magnet…
Anomalies in the Relaxation of Small Magnetic Particles at Very Low Temperatures
R. Sappey, E. Vincent, J. Hammann +3
The magnetization relaxation rate of small gamma-Fe2O3 particles dispersed in a silica matrix has been measured from 60 mK to 5 K. It shows a minimum around 150 mK, that can be dis…
Slow dynamics and aging in spin-glasses
Eric Vincent, Jacques Hammann, Miguel Ocio +2
Contribution presented by Eric Vincent in the Conference `Complex Behaviour of Glassy Systems', Sitges, Barcelona, Spain, June, 1996. It contains a review of the experimental resul…
Towards an experimental measure of the number of metastable states in spin-glasses ?
J. P. Bouchaud, E. Vincent, J. Hammann
We show that an 'ergodic' time scale can be extracted from the aging experiments on spin-glasses. This is the time for which a significant fraction of the metastable states have be…