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, ξ(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 ξ(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.

实验，理论和模拟之间的协同作用使得能够对自旋玻璃转变温度T _g附近和下方的磁场中自旋玻璃动力学进行微观分析。在实验和模拟中，根据旋转玻璃冷却至稳定的测量温度T < T _g后的等待时间t _w来分析旋转玻璃的相关长度ξ（t，t _w ; T）和时间t 改变磁场后。对于CuMn 6 at at，该相关长度是通过实验提取的。％单晶，以及在Janus II专用超级计算机上进行的仿真，后者的时间和长度比例与实验相当。使用ξ（t，t _w ; T）作为缩放变量，通过实验和仿真报告了非线性磁化率。重新分析了以前的实验，并解决了有关塞曼能量性质的分歧。自旋玻璃磁化强度在零场磁化实验中的增长M _ZFC（t，t _w ; T）是通过模拟测量得出的，从而验证了动态或非平衡状态下的比例关系。讨论了我们对D = 3中的de Almeida–Thouless线的初步搜索。