Matching microscopic and macroscopic responses in glasses

Abstract

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)]. 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, non-linear susceptibilities, recently measured in glass-forming liquids, scale as powers of the same microscopic length.

6 pages, 4 figures

References in corpus (9)

• An in-depth view of the microscopic dynamics of Ising spin glasses at fixed temperature
• Nonequilibrium spin glass dynamics from picoseconds to 0.1 seconds
• Simulating spin systems on IANUS, an FPGA-based computer
• The three dimensional Ising spin glass in an external magnetic field: the role of the silent majority
• Testing statics-dynamics equivalence at the spin-glass transition in three dimensions
• The Percolation Signature of the Spin Glass Transition
• Growing dynamical length, scaling and heterogeneities in the 3d Edwards-Anderson model
• Magnetic Field Dependence of Spin Glass Free Energy Barriers
• Ageing at the Spin-Glass/Ferromagnet Transition: Monte Carlo Simulation using GPUs

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• Magnetic Field Dependence of Spin Glass Free Energy Barriers
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• Nontrivial maturation metastate-average state in a one-dimensional long-range Ising spin glass: above and below the upper critical range
• Precursors of the Spin Glass Transition in Three Dimensions
• Quantifying memory in spin glasses
• Numerical study of barriers and valleys in the free-energy landscape of spin glasses
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