3 papers
cond-mat.mtrl-sci2003
Transition and spin dynamics at very low temperature in the pyrochlores Yb2Ti2O7 and Gd2Sn2O7
P. Bonville, J. A. Hodges, E. Bertin +10
The very low temperature properties of two pyrochlore compounds, Yb2Ti2O7 and Gd2Sn2O7, were investigated using an ensemble of microscopic and bulk techniques. In both compounds, a…
cond-mat.dis-nn2003
The Kovacs effect in model glasses
E. M. Bertin, J. -P. Bouchaud, J. -M. Drouffe +1
We discuss the `memory effect' discovered in the 60's by Kovacs in temperature shift experiments on glassy polymers, where the volume (or energy) displays a non monotonous time beh…
cond-mat.dis-nn2002
Sub-diffusion and localization in the one dimensional trap model
E. M. Bertin, J. -P. Bouchaud
We study a one dimensional generalization of the exponential trap model using both numerical simulations and analytical approximations. We obtain the asymptotic shape of the averag…