%0 Journal Article
%A Paga, I.
%A Zhai, Q.
%A Baity-Jesi, M.
%A Calore, E.
%A Cruz, A.
%A Fernández Pérez, Luis Antonio
%A Gil-Narvión, J. M.
%A González-Adalid Pemartín, Isidoro
%A Gordillo Guerrero, A.
%A Iñiguez, D.
%A Maiorano, A.
%A Marinari, E.
%A Martín Mayor, Víctor
%A Moreno Gordo, J.
%A Muñoz Sudupe, Antonio
%A Navarro, D.
%A Orbach, R. L.
%A Parisi, G.
%A Perez-Gaviro, S.
%A Ricci-Tersenghi, F.
%A Ruiz-Lorenzo, J. J.
%A Schifano, S. F.
%A Schlagel, D. L.
%A Seoane Bartolomé, Beatriz
%A Tarancón, A.
%A Tripiccione, R.
%A Yllanes, D.
%T Spin-glass dynamics in the presence of a magnetic field: exploration of microscopic properties
%D 2021
%@ 1742-5468
%U https://hdl.handle.net/20.500.14352/8010
%X The synergy between experiment, theory, and simulations enables a microscopic analysis of spin-glass dynamics in a magnetic field in the vicinity of and below the spin-glass transition temperature T-g. The spin-glass correlation length, xi(t, t(w); T), is analysed both in experiments and in simulations in terms of the waiting time t(w) after the spin glass has been cooled down to a stabilised measuring temperature T < T-g and of the time t after the magnetic field is changed. This correlation length is extracted experimentally for a CuMn 6 at. % single crystal, as well as for simulations on the Janus II special-purpose supercomputer, the latter with time and length scales comparable to experiment. The non-linear magnetic susceptibility is reported from experiment and simulations, using xi(t, t(w); T) as the scaling variable. Previous experiments are reanalysed, and disagreements about the nature of the Zeeman energy are resolved. The growth of the spin-glass magnetisation in zero-field magnetisation experiments, M-ZFC(t, t(w); T), is measured from simulations, verifying the scaling relationships in the dynamical or non-equilibrium regime. Our preliminary search for the de Almeida-Thouless line in D = 3 is discussed.
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