Volume 63, Number 5, September 2003
|Page(s)||750 - 756|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 November 2003|
Two dynamic exponents in the resistive transition of fully frustrated Josephson-junction arrays
Laboratório Associado de Sensores e Materiais Instituto Nacional de Pesquisas Espaciais 12201-190 São José dos Campos, São Paulo, Brazil
2 Centro Atômico Bariloche - 8400 San Carlos de Bariloche, Rio Negro, Argentina
Accepted: 20 June 2003
We study the resistive transition in Josephson-junction arrays at flux quantum per plaquette by dynamical simulations of the resistively-shunted-junction model. The current-voltage scaling and critical dynamics of the phases are found to be well described by the same critical temperature and static exponents as for the chiral (vortex-lattice) transition. Although this behavior is consistent with a single-transition scenario, where phase and chiral variables order simultaneously, two different dynamic exponents result for phase coherence and chiral order.
PACS: 74.81.Fa – Josephson junction arrays and wire networks / 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 74.25.Qt – Vortex lattices, flux pinning, flux creep
© EDP Sciences, 2003
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