Hasenbusch, Martin and Pelissetto, Andrea and Vicari, Ettore (2005) Transitions and crossover phenomena in fully frustrated XY systems. Physical review. B, Condensed matter and materials physics, 72 . p. 184502. ISSN 1550-235X
Full text not available from this repository.Abstract
We study the two-dimensional fully frustrated XY (FFXY) model and two related models, a discretization of the Landau-Ginzburg-Wilson Hamiltonian for the critical modes of the FFXY model and a coupled Ising-XY model, by means of Monte Carlo simulations on square lattices L x L, L=O(10^3). We show that their phase diagram is characterized by two very close chiral and spin transitions, at T_ch > T_sp respectively, of the Ising and Kosterlitz-Thouless type. At T_ch the Ising regime sets in only after a preasymptotic regime, which appears universal to some extent. The approach is nonmonotonic for most observables, with a wide region controlled by an effective exponent nu_eff=0.8.
| Item Type: | Article |
|---|---|
| Additional Information: | Imported from arXiv |
| Subjects: | Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
| Divisions: | Dipartimenti (until 2012) > DIPARTIMENTO DI FISICA " E. FERMI" |
| Depositing User: | dott.ssa Sandra Faita |
| Date Deposited: | 09 Apr 2015 15:31 |
| Last Modified: | 09 Apr 2015 15:31 |
| URI: | http://eprints.adm.unipi.it/id/eprint/1804 |
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