| Full text | |
| Author(s): |
Granato, Enzo
[1]
Total Authors: 1
|
| Affiliation: | [1] Inst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat, BR-12227010 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | Physical Review B; v. 87, n. 9 MAR 21 2013. |
| Web of Science Citations: | 10 |
| Abstract | |
We use driven Monte Carlo dynamics to study the resistive behavior of superconducting Josephson-junction arrays on a honeycomb lattice in a magnetic field corresponding to f flux quantum per plaquette. While for f = 1/3 the onset of zero resistance is found at nonzero temperature; for f = 1/2 the results are consistent with a transition scenario where the critical temperature vanishes and the linear resistivity shows thermally activated behavior. We determine the thermal critical exponent of the zero-temperature transition for f = 1/2 from a dynamic scaling analysis of the nonlinear resistivity. The resistive behavior agrees with recent results obtained for the phase-coherence transition from correlation-length calculations and with experimental observations on ultrathin superconducting films with a triangular pattern of nanoholes. DOI: 10.1103/PhysRevB.87.094517 (AU) | |
| FAPESP's process: | 07/08492-9 - Dynamics, topological defects and phase transitions in ordered media |
| Grantee: | Enzo Granato |
| Support type: | Research Projects - Thematic Grants |