doi:10.1088/1742-5468/abdfcaengPaga, I.Zhai, Q.Baity-Jesi, M.Calore, E.Cruz, A.Fernández, L. A.Gil-Narvion, J. M.González-Adalid Pemartin, I.Gordillo Guerrero, A.Iñiguez, D.Maiorano, A.Marinari, E.Martin-Mayor, V.Moreno-Gordo, J.Muñoz-Sudupe, A.Navarro, D.Orbach, R. L.Parisi, G.Pérez-Gaviro, S.Ricci-Tersenghi, F.Ruiz Lorenzo, J. J.Schifano, S. F.Schlagel, D. L.Seoane, B.Tarancón, A.Tripiccione, R.Yllanes, D.Spin-glass dynamics in the presence of a magnetic field: exploration of microscopic propertiesART-2021-124310The 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, ¿(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 ¿(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.2021http://zaguan.unizar.es/record/13605310.1088/1742-5468/abdfcahttp://zaguan.unizar.es/record/136053oai:zaguan.unizar.es:136053info:eu-repo/grantAgreement/EC/H2020/694925/EU/Low Temperature Glassy Systems/LoTGlasSyThis project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 694925-LoTGlasSyinfo:eu-repo/grantAgreement/ES/MCIU/FPU18/02665info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PGC2018-094684-B-C21info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PGC2018-094684-B-C22info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2019-103939RB-I00info:eu-repo/grantAgreement/ES/MINECO/FIS2016-76359-PJournal of Statistical Mechanics: Theory and Experiment 2021, 3 (2021), 033301 [49 pp.]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess