Fluctuation-dissipation ratio of the Heisenberg spin glass

Abstract

Fluctuation-dissipation (FD) relation of the three-dimensional Heisenberg spin glass with weak random anisotropy is studied by off-equilibrium Monte Carlo simulation. Numerically determined FD ratio exhibits a ``one-step-ike''behavior, the effective temperature of the spin-glass state being about twice the spin-glass transition temperature, $T_{\mathrm{eff}}\simeq 2T_g$, irrespective of the bath temperature. The results are discussed in conjunction with the recent experiment by Herisson and Ocio, and with the chirality scenario of spin-glass transition.

Inset added to Fig.1. Minor change made in the text. To appear in PRL

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Cited by in corpus (13)

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• Chirality scenario of the spin-glass ordering
• Monte Carlo studies of the chiral and spin orderings of the three-dimensional Heisenberg spin glass
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• A statics-dynamics equivalence through the fluctuation-dissipation ratio provides a window into the spin-glass phase from nonequilibrium measurements
• Off-equilibrium fluctuation-dissipation relation in a spin glass
• Experimental Evidence of Fluctuation-Dissipation Theorem Violation in a Superspin Glass
• Spin-glass behavior in the random-anisotropy Heisenberg model
• Monte Carlo studies of the spin-chirality decoupling in the three-dimensional Heisenberg spin glass
• Atomistic spin dynamics of the CuMn spin glass alloy
• Monte Carlo simulations of the three-dimensional XY spin glass focusing on the chiral and the spin order
• Spin-glass dynamics: experiment, theory and simulation
• Financial Brownian particle in the layered order book fluid and Fluctuation-Dissipation relations