Baity-Jesi M, Calore E, Cruz A, Fernandez L A, Gil-Narvion J M, Gordillo-Guerrero A, Iñiguez D, Maiorano A, Marinari E, Martin-Mayor V, Monforte-Garcia J, Muñoz-Sudupe A, Navarro D, Parisi G, Perez-Gaviro S, Ricci-Tersenghi F, Ruiz-Lorenzo J J, Schifano S F, Seoane B, Tarancon A, Tripiccione R, Yllanes D
Institut de Physique Théorique, Université Paris Saclay, CEA, CNRS, F-91191 Gif-sur-Yvette, France.
Dipartimento di Fisica e Scienze della Terra, Università di Ferrara e INFN, Sezione di Ferrara, I-44122 Ferrara, Italy.
Phys Rev Lett. 2017 Apr 14;118(15):157202. doi: 10.1103/PhysRevLett.118.157202. Epub 2017 Apr 13.
We first reproduce on the Janus and Janus II computers a milestone experiment that measures the spin-glass coherence length through the lowering of free-energy barriers induced by the Zeeman effect. Secondly, we determine the scaling behavior that allows a quantitative analysis of a new experiment reported in the companion Letter [S. Guchhait and R. Orbach, Phys. Rev. Lett. 118, 157203 (2017)].PRLTAO0031-900710.1103/PhysRevLett.118.157203 The value of the coherence length estimated through the analysis of microscopic correlation functions turns out to be quantitatively consistent with its measurement through macroscopic response functions. Further, nonlinear susceptibilities, recently measured in glass-forming liquids, scale as powers of the same microscopic length.
