| Issue |
EPL
Volume 90, Number 4, May 2010
|
|
|---|---|---|
| Article Number | 46006 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/90/46006 | |
| Published online | 17 June 2010 | |
Scaling behavior of response functions in the coarsening dynamics of disordered ferromagnets
1
Dipartimento di Scienze Ambientali, Seconda Università di Napoli - Via Vivaldi, Caserta, Italy, EU
2
School of Physical Sciences, Jawaharlal Nehru University - New Delhi 110067, India
3
Dipartimento di Matematica e Informatica and CNISM, Unità di Salerno, Università di Salerno via Ponte don Melillo, 84084 Fisciano (SA), Italy, EU
Corresponding author: purijnu@gmail.com
Received:
14
January
2010
Accepted:
25
May
2010
We study coarsening dynamics in the ferromagnetic random bond Ising model in d =1, 2. We focus on the validity of super-universality and the scaling properties of the response functions. In the d = 1 case, we obtain a complete understanding of the evolution, from pre-asymptotic to asymptotic behavior. The corresponding response function shows a clear violation of super-universality. Further, our results for d = 1, 2 settle the controversy regarding the decay exponent which characterizes the response function.
PACS: 64.60.Ht – Dynamic critical phenomena / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
© EPLA, 2010
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