| Full text | |
| Author(s): |
Granato‚ E.
Total Authors: 1
|
| Document type: | Journal article |
| Source: | Physical Review Letters; v. 101, n. 2, p. 27004, 2008. |
| Abstract | |
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) | |
| FAPESP's process: | 07/08492-9 - Dynamics, topological defects and phase transitions in ordered media |
| Grantee: | Enzo Granato |
| Support Opportunities: | Research Projects - Thematic Grants |