TEM picture of the film made of the paste containing of .
(Color online) Resistance vs temperature for the S samples , 0.12, and 0.16.
(Color online) Noise magnitude (open circles), voltage (filled circles), and film thickness (squares) vs relative distance for L samples: #108 and #111 with Au terminations measured at . The voltage across the whole sample was . Lines are: the graph of Eq. (1) (solid, upper panel), and the function: (dashed, lower panel).
(Color online) Power spectral densities of excess noise measured at for several voltages biasing a pair of S samples.
(Color online) Dependence of noise magnitude on voltage at selected temperatures measured for samples . Dashed line has the slope of 2. Averaging was over the band .
(Color online) Normalized noise as a function of temperature. Filled and empty symbols for series refer to two measurement sessions (performed with six month delay) with different values of load resistance . Line drawn through data has the slope . Dashed–dotted line is the plot of .
(Color online) Normalized noise as a function of magnetic field at selected temperatures measured for samples and 0.16.
(Color online) Sample maps of vs frequency and reciprocal temperature measured with dc technique for samples #102, #103 (, PtAu contacts) in two experimental runs.
(Color online) Normalized excess noise (left-hand axis) and resistance (right-hand axis) vs temperature measured with dc (small points) or ac (large circles) bias for samples #102 and #103. Line is the function graph of . dc measurements were performed for three different voltages 40, 60, and 100 V across the measurement bridge. Voltage across the samples changes during experiment and was in the range , , and , respectively.
(Color online) Noise exponent calculated from spectral slope (points) at compared with the values calculated from temperature dependence of noise (lines) through rhs of Eq. (2) (thin solid) and activation energies (most right), 0.13, and 0.06 eV (most left) or Eq. (3) (thick solid) or Eq. (5) (dashed).
(Color online) Data from Figs. 9 and 6 for films (squares) and (circles) redrawn as vs . Lines show the fit with percolation power law.
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