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Observation of stochastic resonance in percolative Josephson media

Glukhov, A. M.; Sivakov, A. G.; Ustinov, A. V.

Measurements of the electrical response of granular Sn-Ge thin films below the superconducting transition temperature are reported. The addition of an external noise to the magnetic field applied to the sample is found to increase the sample voltage response to a small externally applied ac signal. The gain coefficient for this signal and the signal-to-noise ratio display clear maxima at particular noise levels. We interpret these observations as a stochastic resonance in the percolative Josephson media which occurs close to the percolation threshold.

DOI: 10.1063/1.1491176
Zitationen: 7
Web of Science
Zitationen: 7
Zitationen: 8
Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2002
Sprache Englisch
Identifikator ISSN: 1063-777X, 1090-6517
KITopen-ID: 1000074334
Erschienen in Low temperature physics
Verlag American Institute of Physics (AIP)
Band 28
Heft 6
Seiten 383-386
Nachgewiesen in Web of Science
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