| Texto completo | |
| Autor(es): |
Granato‚ E.
Número total de Autores: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review Letters; v. 101, n. 2, p. 27004, 2008. |
| Resumo | |
Phase coherence and vortex order in a Josephson-junction array at irrational frustration are studied by extensive Monte Carlo simulations using the parallel-tempering method. A scaling analysis of the correlation length of phase variables in the full equilibrated system shows that the critical temperature vanishes with a power-law divergent correlation length and critical exponent nu(ph), in agreement with recent results from resistivity scaling analysis. A similar scaling analysis for vortex variables reveals a different critical exponent nu(v), suggesting that there are two distinct correlation lengths associated with a decoupled zero-temperature phase transition. (AU) | |
| Processo FAPESP: | 07/08492-9 - Dinâmica, defeitos topológicos e transições de fase em meios ordenados |
| Beneficiário: | Enzo Granato |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |