Ref HAL: hal-00858215_v3
Ref Arxiv: 1309.1243
DOI: 10.1103/PhysRevLett.113.085301
WoS: 000341115200007
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
8 Citations
Résumé:

High resolution measurements reveal that condensation isotherms of $^4$He in a silica aerogel become discontinuous below a critical temperature. We show that this behaviour does not correspond to an equilibrium phase transition modified by the disorder induced by the aerogel structure, but to the disorder-driven critical point predicted for the athermal out-of-equilibrium dynamics of the Random Field Ising Model. Our results evidence the key role of non-equilibrium effects in the phase transitions of disordered systems.

Commentaires: 5 p + suppl. material