103 citations · 303 across the 5 of their papers we have counts for
5 papers
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…
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…
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…
Dynamical ultrametricity in the critical trap model
E. Bertin, J. -P. Bouchaud
We show that the trap model at its critical temperature presents dynamical ultrametricity in the sense of Cugliandolo and Kurchan [CuKu94]. We use the explicit analytic solution of…
Effective nuclear temperature in a fluctuating spin system
E. Bertin, J. A. Hodges, J. -P. Bouchaud +3
We report on very low temperature (27 mK) Mossbauer absorption spectra on Gd 155 in the Heisenberg frustrated antiferromagnets Gd2 Sn2 O7 (GdSn) and Gd2 Ti2 O7. We show that electr…