156 citations · 697 across the 10 of their papers we have counts for
9 papers · 1 filter
Spin glasses : experimental signatures and salient outcomes
Eric Vincent, Vincent Dupuis
Within the wide class of disordered materials, spin glasses occupy a special place because of their conceptually simple definition of randomly interacting spins. Their modelling ha…
Noise Measurement of Interacting Ferromagnetic Particles with High Resolution Hall Microprobes
K. Komatsu, D. L'Hote, S. Nakamae +7
We present our first experimental determination of the magnetic noise of a superspinglass made of < 1 pico-liter frozen ferrofluid. The measurements were performed with a local mag…
Spin glass behavior in an interacting gamma-Fe2O3 nanoparticle system
D. Parker, V. Dupuis, F. Ladieu +4
In this paper we investigate the superspin glass behavior of a concentrated assembly of interacting maghemite nanoparticles and compare it to that of canonical atomic spin glass sy…
Aging, rejuvenation and memory phenomena in spin glasses
V. Dupuis, F. Bert, J. -P. Bouchaud +4
In this paper, we review several important features of the out-of-equilibrium dynamics of spin glasses. Starting with the simplest experiments, we discuss the scaling laws used to…
Spin Anisotropy and Slow Dynamics in Spin Glasses
F. Bert, V. Dupuis, E. Vincent +2
We report on an extensive study of the influence of spin anisotropy on spin glass aging dynamics. New temperature cycle experiments allow us to compare quantitatively the memory ef…
Deviations from Perfect Memory in Spin Glass Temperature Cycling Experiments
M. Sasaki, V. Dupuis, J. -P. Bouchaud +1
We study the deviations from perfect memory in negative temperature cycle spin glass experiments. It is known that the a.c. susceptibility after the temperature is raised back to i…
Aging, rejuvenation and memory effects in Ising and Heisenberg spin glasses
V. Dupuis, E. Vincent, J. -P. Bouchaud +3
We have compared aging phenomena in the Fe_{0.5}Mn_{0.5}TiO_3 Ising spin glass and in the CdCr_{1.7}In_{0.3}S_4 Heisenberg-like spin glass by means of low-frequency ac susceptibili…
Aging in a topological spin glass
A. S. Wills, V. Dupuis, E. Vincent +2
We have examined the nonconventional spin glass phase of the 2-dimensional kagome antiferromagnet (H_3 O) Fe_3 (SO_4)_2 (OH)_6 by means of ac and dc magnetic measurements. The freq…
Aging phenomena in spin glass and ferromagnetic phases: domain growth and wall dynamics
E. Vincent, V. Dupuis, M. Alba +2
We compare aging in a disordered ferromagnet and in a spin glass, by studying the different phases of a reentrant system. We have measured the relaxation of the low-frequency ac su…