Scaling of the magnetic linear response in phase-ordering kinetics

Details Scaling of the magnetic linear response in phase-ordering kinetics Scaling of the magnetic linear response in phase-ordering kinetics

2002-11-26

arxiv.org/abs/cond-mat/0211583v3

Europhys. Lett. 62, 664-670 (2003)

Physics

Condensed Matter

7 pages, 2 figures included, needs epl.cls, version to appear in Europhys. Lett

Scientific paper

10.1209/epl/i2003-00425-9

The scaling of the thermoremanent magnetization and of the dissipative part of the non-equilibrium magnetic susceptibility is analysed as a function of the waiting-time $s$ for a simple ferromagnet undergoing phase-ordering kinetics after a quench into the ferromagnetically ordered phase. Their scaling forms describe the cross-over between two power-law regimes governed by the non-equilibrium exponents $a$ and $\lambda_R/z$, respectively. A relation between $a$, the dynamical exponent $z$ and the equilibrium exponent $\eta$ is derived from scaling arguments. Explicit tests in the Glauber-Ising model and the kinetic spherical model are presented.

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