2002/06/01 by A. M. Glukhov, A. G. Sivakov, A. V. Ustinov · 1 citation
Physics and Astronomy · #High-temperature superconductivity #Josephson effect #Magnetic field #Maxima #Noise (video) #Percolation (cognitive psychology) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Resonance (particle physics) #Stochastic resonance #Superconductivity #cond-mat.dis-nn #cond-mat.supr-con #stochastic dynamics and bifurcation
paper · pdf · doi:10.1063/1.1491176
published as Low Temp. Phys. 28, 383 (2002) · 4 pages, 5 figures
openalex publication_date 2002/06/01 · arxiv created 2002/09/24 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.