| Texto completo | |
| Autor(es): |
Granato, Enzo
[1]
Número total de Autores: 1
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| Afiliação do(s) autor(es): | [1] Inst Nacl Pesquisas Espaciais, Lab Associado Sensores & Mat, BR-12227010 Sao Jose Dos Campos, SP - Brazil
Número total de Afiliações: 1
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| Tipo de documento: | Artigo Científico |
| Fonte: | Physical Review B; v. 87, n. 9 MAR 21 2013. |
| Citações Web of Science: | 10 |
| Resumo | |
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) | |
| 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 |