A scaling law describes the spin-glass response in theory, experiments and simulations
ORAL
Abstract
The dynamical arrest found upon cooling glass formers to their glass temperature Tg is caused by the unbounded expansion of cooperative regions as Tg is approached or as the system is left to age below Tg. It is extremely difficult to measure quantities that are accessible both to experiment and simulations, which has led to seemingly irreconcilable approaches.
We solved this dilemma in a framework that harmonizes experiments with theory. We conduct a parallel study of spin-glass dynamics both in an experiment in a CuMn single crystal and in simulations of the Ising-Edwards-Anderson (IEA) model carried out on the Janus II custom-built supercomputer. We introduced a scaling law that describes the system's response over its entire natural range of variation.
We solved this dilemma in a framework that harmonizes experiments with theory. We conduct a parallel study of spin-glass dynamics both in an experiment in a CuMn single crystal and in simulations of the Ising-Edwards-Anderson (IEA) model carried out on the Janus II custom-built supercomputer. We introduced a scaling law that describes the system's response over its entire natural range of variation.
*This work was partially supported by the U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Science and Engineering, under Award No. DESC0013599, and Contract No. DEC02-07CH11358, by MINECO (Spain) through Grants No. FIS2016-76359P, No. PID2019-103939RB-I00, No. PGC2018-094684B-C21 and PGC2018-094684-B-C22, by the Junta de Extremadura (Spain) through Grant No. GRU18079 and IB15013, by the DGAFSE, and by the European Union’s Horizon 2020 research and innovation program ( Nos. 694925 and 723955).
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Presenters
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Ilaria Paga
- Sapienza Università di Roma
- Univ of Rome La Sapienza