Anomalous Behavior near T_c and Synchronization of Andreev Reflection in Two-Dimensional Arrays of SNS Junctions
arXiv:cond-mat/0601142 · doi:10.1134/1.1881727
Abstract
We have investigated low-temperature transport properties of two-dimensional arrays of superconductor--normal-metal--superconductor (SNS) junctions. It has been found that in two-dimensional arrays of SNS junctions (i) a change in the energy spectrum within an interval of the order of the Thouless energy is observed even when the thermal broadening far exceeds the Thouless energy for a single SNS junction; (ii) the manifestation of the subharmonic energy gap structure (SGS) with high harmonic numbers is possible even if the energy relaxation length is smaller than that required for the realization of a multiple Andreev reflection in a single SNS junction. These results point to the synchronization of a great number of SNS junctions. A mechanism of the SGS origin in two-dimensional arrays of SNS junctions, involving the processes of conventional and crossed Andreev reflection, is proposed.
arXiv comment5 pages, 5 figures
References in corpus (6)
- Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures
- Probing Spatial Correlations with Nanoscale Two-Contact Tunneling
- Quantum superconductor-metal transition in a proximity array
- Circuit theory of multiple Andreev reflections in diffusive SNS junctions: the incoherent case
- Two-dimensional array of diffusive SNS junctions with high-transparent interfaces
- Dynamics of conversion of supercurrents into normal currents, and vice versa
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- Nonequilibrium mesoscopic superconductors in a fluctuational regime
- Incoherent multiple Andreev reflection in an array of SNS junctions
- Low temperature transport in tunnel junction arrays: Cascade energy relaxation
- Synchronized Andreev Transmission in Chains of SNS Junctions
- Critical behavior at the dynamic Mott transition