Theory of superconductor-insulator transition in single Josephson junctions

Details Theory of superconductor-insulator transition in single Josephson junctions Theory of superconductor-insulator transition in single Josephson junctions

2002-02-09

arxiv.org/abs/cond-mat/0202163v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.66.012503

A non-band theory is developed to describe the superconductor-insulator (SI) transtition in resistively shunted, single Josephson junctions. The $I-V$ characteristic is formulated by a Landauer-like formula and evaluated by the path-integral transfer-matrix method. The result is consistent with the recent experiments at around 80 $mK$. However, the insulator phase shrinks with decreasing temperature indicating that the single Josephson junction becomes all superconducting at absolute zero temperature, as long as dissipation is present.

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