Current responses and voltage fluctuations in Josephson-junction systems

Details Current responses and voltage fluctuations in Josephson-junction systems Current responses and voltage fluctuations in Josephson-junction systems

1998-06-30

arxiv.org/abs/cond-mat/9806364v1

Europhys. Lett. 43 (4), 439 (1998)

Physics

Condensed Matter

4 pages, To appear in Europhys. Lett

Scientific paper

10.1209/epl/i1998-00378-5

We consider arrays of Josephson junctions as well as single junctions in both the classical and quantum-mechanical regimes, and examine the generalized (frequency-dependent) resistance, which describes the dynamic responses of such Josephson-junction systems to external currents. It is shown that the generalized resistance and the power spectrum of voltage fluctuations are related via the fluctuation-dissipation theorem. Implications of the obtained relations are also discussed in various experimental situations.

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