Capacitively coupled Josephson-junction chains: straight and slanted coupling

Details Capacitively coupled Josephson-junction chains: straight and slanted coupling Capacitively coupled Josephson-junction chains: straight and slanted coupling

1998-02-23

arxiv.org/abs/cond-mat/9802237v1

J. Phys.: Condens. Matter 12, 943 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

REVTeX + 7 EPS figures, detailed version of cond-mat/9802199

Scientific paper

10.1088/0953-8984/12/6/316

Two chains of ultrasmall Josephson junctions, coupled capacitively with each other in the two different ways, straight and slanted coupling, are considered. As the coupling capacitance increases, regardless of the coupling scheme, the transport of particle-hole pairs in the system is found to drive the quantum-phase transition at zero temperature, which is a insulator-to-superfluid transition of the particle-hole pairs and belongs to the Berezinskii-Kosterlitz-Thouless universal class. The different underlying transport mechanisms for the two coupling schemes are reflected in the difference between the transition points.

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